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What is a root number in an equation?
a root number is a number in which satifies the unknown value of an equation. For example: x² - 1 = 0 the root of this equation would be 1 or -1 since when multiplied by itself, they both equal 1. Therefore, 1 - 1 = 0
Choose the quadratic equation with a leading coefficient of 1 that has as solutions -4 and 7?
x^2-3x-28=0...................
What is 9x2 6x 1 solved for x?
If you mean: 9x squared+6x+1 = 0 then x = -1/3 and x = -1/3 therefore the quadratic equation has equal roots
Sketch the graph for equation x plus y equals 5?
It's equal to -X + 5 = Y (1, 4) (5, 0)
Identify the number of solutions to the quadratic equation 4x2 - 4x plus 1 equals 0?
4x2 - 4x + 1 = 0 => (2x - 1)(2x - 1) = 0 => (2x - 1)2 = 0 There is one solution: x = 1/2. It is a repeated root of the equation.
Which equation has equal roots?
Lots, eg x2 - 2x + 1 = 0 which factorises as (x - 1)(x - 1) = 0
What is a root number in an equation?
a root number is a number in which satifies the unknown value of an equation. For example: x² - 1 = 0 the root of this equation would be 1 or -1 since when multiplied by itself, they both equal 1. Therefore, 1 - 1 = 0
Can you solve 3x2-x equals -1?
Set the equation equal to zero. 3x2 - x = -1 3x2 - x + 1 = 0 The equation is quadratic, but can not be factored. Use the quadratic equation.
Is -1 -1 a solution to x y?
0
What is the straight line equation passing through points 4 and 0 when it is perpendicular to x plus 7y plus 4 equals 0?
x+7y+4 = 0 => y = -1/7x-4/7 The slope of the second equation is the reciprocal of the first equation with the minus sign changing to a plus sign. y = mx+c where m is the slope and c is the intercept on the y axis So: 7*4+c = 0 28+c = 0 c = -28 Therefore the perpendicular equation is: y = 7x-28 which can be expressed in the form of 7x-y-28 = 0
What is the y intercept and slope in this equation y equal x?
The y-intercept is 0 and the slope is 1.
Which equation has the solution set 1 and 3?
An equation with the solution set 1 and 3 can be written in factored form as (x-1)(x-3) = 0. When expanded, this equation becomes x^2 - 4x + 3 = 0. Therefore, the equation x^2 - 4x + 3 = 0 has the solution set 1 and 3.
Choose the quadratic equation with a leading coefficient of 1 that has as solutions -4 and 7?
x^2-3x-28=0...................
How many real number solutions does the equation -8x2-8x-2 equals 0 have?
Divide all terms by -2: 4x2+4x+1 = 0 (2x+1)(2x+1) = 0 x = -1/2 and also x = -1/2 The quadratic equation has 2 equal roots.
Show that n squared - 25n plus 84 equals 0?
i think your a bit confused (or have written your question wrongly). n is an unknown (as you didnt state otherwise), and can take any value. n could equal 1 (1 squared -25*1 +84doesnt equal 0), therefore you cannot show that your expression equals 0. i assume you meant to ask us to solve the equation you gave (which would mean you are asking for the values of n, which satisfy the equation), so this is what i shall do. To solve this, as it is a quadratic equation, you first look to factorise (if this doesn't work, use the quadratic formula): To factorise the equation: n^2 - 25n + 84 = 0, you need to find two numbers which multiply to give +84, and add together to give -25. these numbers are -3 and -28 (by trial and error). therefore n^2 - 25n + 84 = (n-3)(n-28) = 0 and the only way two numbers multiply together to get 0, is if either (or both) numbers are 0. therefore: n - 3 = 0 which gives the solution n=3 or: n - 28 = 0 which gives the solution n=28 therfore the solutions are n=28 or n=3
What number multiplied by zero equals 1?
There is no number that can multiplied by 0 to get 1. The equation 0x = 1 has no solution bcause 0x = 0 whatever number x may be. You might think that 1/0 times 0 would equal 1 but 1/0 is not a number.
What are the characteristics of a linear equation?
y = ax + b x to the power of 1, x^1 there are no exponents in the simplified formula x is in the equation, so a does not equal 0 b can be any number
