x-4 is the correct answer for Apex
(x + 4)(x + 9)
(12x - 6)(12x + 6)
x2-5x-36 = (x-9(x+4) when factored
It is (x - 9)*(x + 4)
36 is the largest factor of 36,
(x - 9)(x - 4)
When factored it is: (x-9)(x+4)
-10
x^(2) - 13x + 36 Factors to ( x - 9)(x - 4)
(x + 4)(x + 9)
. x + 4
(x -3)(2x2 + 3x - 4)
(x + 9)(x + 4)
(12x - 6)(12x + 6)
To factor the expression (x^2 + 13x + 36), you need to find two numbers that multiply to 36 (the constant term) and add up to 13 (the coefficient of the linear term). The numbers 9 and 4 meet these criteria, as (9 \times 4 = 36) and (9 + 4 = 13). Therefore, you can factor the expression as ((x + 9)(x + 4)).
x2-5x-36 = (x-9(x+4) when factored
Well, if that was a - 13X we could factor by inspection, but now the quadratic formula is needed. By inspection the discriminant yields two real roots. X^2 + 13X + 36 = 0 X = - b (+/-) sqrt(b^2-4ac)/2a a = 1 b = 13 c = 36 X = - 13 (+/-) sqrt[b^2 - 4(1)(36)]/2(1) X = - 13 (+/-) sqrt(169 - 144)/2 X = - 13 (+/-) sqrt(25)/2 X = [- 13 (+/-) 5]/2 X = - 4 ------------ X = - 9 -----------