Question

Find the solution(s) for x in the equation below. X^2+7x=8 A.X=-1;x=8 B.X=1;x=8 C.X=1;x= -8 D. X=-1;x=-8

Answer 1

x = -8 and x =1

Explanation:

Given the equation

X^2+7x=8

X^2+7x-8 = 0

Factorize

x^2 - x +8x - 8 = 0

x(x-1)+8(x-1) = 0

(x+8)(x-1) = 0

x+8 = 0 and x-1 = 0

x = 0-8 and x = 0+1

x = -8 and 1

Hence the required solution is x = -8 and x =1