Factorising -x2 + 7x + 18: (a - x)(x + b) = -x2 + (b - a)x + ab so ab = 18, b - a = 7 giving a = 2, b = 9: (2 - x)(x + 9)
x2 + 7x = 2x2 + 6 x2 - 2x2 + 7x = 6 -x2 +7x - 6 = 0 or alternatively x2 - 7x + 6 = 0
x2+7x-8 = (x-1(x+8)
=3x * * * * * The correct answer is: x2 + 7x + 12 = (x + 3)(x + 4).
i got 42 divided 7x
x2+7x-18 = (x+9)(x-2) when factored
The value of x2+7x+10 depends on the value of X. If x=1, then x2+7x+10 = 18 If x=2, then x2+7x+10 = 28 If x=3, then x2+7x+10 = 40 and so forth
Factorising -x2 + 7x + 18: (a - x)(x + b) = -x2 + (b - a)x + ab so ab = 18, b - a = 7 giving a = 2, b = 9: (2 - x)(x + 9)
x2+7x+12
(x2 + 7x - 18) = (x + 9)(x - 2)
x^2 + 7x -18 = (x - 2)(x + 9)
x2-7x-18 = (x-9)(x+2) when factored
x2 + 7x = 2x2 + 6 x2 - 2x2 + 7x = 6 -x2 +7x - 6 = 0 or alternatively x2 - 7x + 6 = 0
x2+7x+12=0 x2+7x=-12 x+Sqaure Root of 7x= 2(SQ Root Symbol)3
x2 + 7x + 6 = (x + 6) (x + 1)
x2 + 7x - 8 = (x + 8)(x - 1)
x2+7x-8 = (x-1(x+8)