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What are the solutions to the quadratic equation n2 -n -90 equals 0?
Wiki User
∙ 8y ago
If: n squared -n -90 = 0
Then the solutions are: n = 10 or n = -9
Wiki User
∙ 8y ago
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The sum of a number and its square is 90 Find the number?
Use any letter for the number, for example, x. The equation is:x + x2 = 90This should be converted to standard form before proceeding:x2 + x = 90x2 + x - 90 = 0This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.(x + 10)(x - 9) = 0This gives you two solutions for x:x + 10 = 0x = -10or:x - 9 = 0x = 9Note: it is quite common for a quadratic equation to have two solutions.Use any letter for the number, for example, x. The equation is:x + x2 = 90This should be converted to standard form before proceeding:x2 + x = 90x2 + x - 90 = 0This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.(x + 10)(x - 9) = 0This gives you two solutions for x:x + 10 = 0x = -10or:x - 9 = 0x = 9Note: it is quite common for a quadratic equation to have two solutions.Use any letter for the number, for example, x. The equation is:x + x2 = 90This should be converted to standard form before proceeding:x2 + x = 90x2 + x - 90 = 0This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.(x + 10)(x - 9) = 0This gives you two solutions for x:x + 10 = 0x = -10or:x - 9 = 0x = 9Note: it is quite common for a quadratic equation to have two solutions.Use any letter for the number, for example, x. The equation is:x + x2 = 90This should be converted to standard form before proceeding:x2 + x = 90x2 + x - 90 = 0This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.(x + 10)(x - 9) = 0This gives you two solutions for x:x + 10 = 0x = -10or:x - 9 = 0x = 9Note: it is quite common for a quadratic equation to have two solutions.
What is the most challenging math equation in the world?
46x by 87y -------------- √ 90 Tips: If you move that 46x over the equals, and if you square both sides, you can get rid of that square root, and do the equation normally.
What plus what equals 90?
There are an infinite number of solutions, like 45 + 45 or 60 + 30
What multiplication equation equals 900?
You might think it looks hard but it's really not all you have to do is say 90 x 10 = 900
What times 90 equals 270?
3 times 90 equals 270.
What is the answer for this quadratic equation 2x2 - 3x - 90?
That's not an equation - it doesn't have an equal sign. Assuming you mean 2x2 - 3x - 90 = 0, you can find the solution, or usually the two solutions, of such equations with the quadratic formula. In this case, replace a = 2, b = -3, c = -90.
What is x to the 2nd power minus 9x plus 90?
A quadratic equation, if there's an equals stil to come... Otherwise it's just an expression.
what is the answer to the equation sixty times 1.5 equals?
60 x 1.5 is 90
The sum of a number and its square is 90 Find the number?
Use any letter for the number, for example, x. The equation is:x + x2 = 90This should be converted to standard form before proceeding:x2 + x = 90x2 + x - 90 = 0This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.(x + 10)(x - 9) = 0This gives you two solutions for x:x + 10 = 0x = -10or:x - 9 = 0x = 9Note: it is quite common for a quadratic equation to have two solutions.Use any letter for the number, for example, x. The equation is:x + x2 = 90This should be converted to standard form before proceeding:x2 + x = 90x2 + x - 90 = 0This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.(x + 10)(x - 9) = 0This gives you two solutions for x:x + 10 = 0x = -10or:x - 9 = 0x = 9Note: it is quite common for a quadratic equation to have two solutions.Use any letter for the number, for example, x. The equation is:x + x2 = 90This should be converted to standard form before proceeding:x2 + x = 90x2 + x - 90 = 0This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.(x + 10)(x - 9) = 0This gives you two solutions for x:x + 10 = 0x = -10or:x - 9 = 0x = 9Note: it is quite common for a quadratic equation to have two solutions.Use any letter for the number, for example, x. The equation is:x + x2 = 90This should be converted to standard form before proceeding:x2 + x = 90x2 + x - 90 = 0This can easily be factored. You need two numbers (one positive, one negative), whose sum is +1, and whose product is -90.(x + 10)(x - 9) = 0This gives you two solutions for x:x + 10 = 0x = -10or:x - 9 = 0x = 9Note: it is quite common for a quadratic equation to have two solutions.
What is the answer to -243 equals 90-9x?
The value of x that solves the equation -243 = 90 - 9x is x = -12.
What two number add to make 27 but multiply to make 90?
117
How do you solve a plus 18 equals 90?
a + 18 = 90 is a linear equation in one variable. Adding both sides by -18, we get a + 18 - 18 = 90 - 18 a = 90 - 18 = 72
Where would you put parentheses around the following equation 200 minus 90 plus 20 equals 10?
(200-90)+20=10
What equation is 90 degrees right angle to the equation y equals 3x plus 5?
Any line with the equation of the form 3y = -x + c where c is any constant.
What two numbers multiply to give you 90 and add to give 43?
133
Negative 45y equals negative 90 solve for y?
y = 2 (Divide each side of the equation by -45)
What is the most challenging math equation in the world?
46x by 87y -------------- √ 90 Tips: If you move that 46x over the equals, and if you square both sides, you can get rid of that square root, and do the equation normally.
