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they are telling u that X=5, so plug in a 5 anywhere there is an X, so now is 52 x 2x5= 5x5=25 , so now is: 25x(2x5), 2x5=10, so now is 25x10=250 ,so the answer is : x2x (2x) = 52x(2x)=52x(2x5)=25x2x5=250
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What is fifteen less than the square of a number is the same as twice the numberfind the number?
x2 - 15 = 2x x2 - 2x - 15 = 0 x2 - 2x - 15 = (x - 5)(x + 3) x = 5, -3
What is one of the factors of x2 - 2x -15?
If that's - 2x - 15, the answer is either (x - 5) or (x + 3)
How do you factorise x squared plus 2x - 15?
17
What is a polynomial equation of least degree for roots 3 and -5 and 1?
(x - 3)*(x + 5)*(x - 1) = 0 (x2 - 3x + 5x - 15)*(x - 1) = 0 (x2 + 2x - 15)*(x - 1) = 0 (x3 + 2x2 - 15x - x2 - 2x + 15) = 0 ie x3 + x2 - 17x + 15 = 0
X2 - 2x - 13 equals 0?
x2 - 2x - 13 = 0 x2 - 2x + 1 = 14 (x - 1)2 = 14 x - 1 = ±√14 x = 1 ±√14 x ≈ {4.742, -2.742}
Factor the trinomial x2 2x - 15?
If the expression is, x2 + 2x - 15 this has factors of (x + 5)(x - 3). If the expression is, x2 - 2x - 15 then the factors are (x - 5)(x + 3)
What must be added to make x² - 2x plus 5 a perfect square?
negative four: x2 - 2x + 5 = x2 - 2x + 5 - 4 = x2 - 2x + 1 = (x - 1)2
What is x2 2x 15?
If you mean x2 + 2x + 15: Then the answer would be that it's a quadratic expression with no factors. If you mean x2 - 2x + 15: Then it can be factored out to: (x - 5)(x + 3) If you mean x2 + 2x - 15: Then it can be factored out to: (x + 5)(x - 3)
What is the factor of X2 plus 2x-15?
x2 + 2x - 15 = (x + 5)(x - 3)
What is x2 plus 2x-15 equals?
x2 + 2x - 15 = (x - 3)(x + 5)
X2 - 2x - 5 equals 0?
x2 - 2x - 5 = 0 x2 - 2x + 1 = 6 (x - 1)2 = 6 x - 1 = ± √6 x = 1 ± √6
What is the factor of equals X2-2x-15?
x2-2x-15 = (x+3)(x-5) when factored
Solve x2 plus 2x - 13 equals 2?
x2 + 2x - 13 = 2 x2 + 2x - 15 = 0 (x + 5)(x - 3) = 0 x + 5 = 0 and x - 3 = 0 so x = -5 and x = 3
Which graph of the solution for the quadratic inquality x2-2x less than or equal to 15?
x2-2x = 15 x2-2x-15 = 0 (x-5)(x+3) = 0 Therefore: x = 5 or x = -3
Which expression is a factor of x2 plus 2x-15?
x2+2x-15 = (x+5)(x-3) when factored
What is fifteen less than the square of a number is the same as twice the numberfind the number?
x2 - 15 = 2x x2 - 2x - 15 = 0 x2 - 2x - 15 = (x - 5)(x + 3) x = 5, -3
What is one of the factors of x2 - 2x -15?
If that's - 2x - 15, the answer is either (x - 5) or (x + 3)
