Question

Solve x2 + 8x = 24.

A. -4 plus or minus 2 sq root of 2
B. -4 plus or minus 2 sq root of 10
C. -4 plus or minus 2 sq root of 5
D. -4 plus or minus 2 sq root of 7

Answer 1

so is it square root or squared?

Answer 2

Hello,


x²+8x-24=0
Δ=8²+4*24=160
==>x=(-8-4√10)/2=-4-2√10 or x=-4+2√10
Answer B