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Answer:
The answer for x is 2,-4
Explanation:
x²+2x-8=0
x²+2x=8
x²+2x+[2×1/2]=8+[2×1/2]
x²+2x+(1)²=8+(1)²
[x+1]²=8+1
[x+1]²=9
take square root of both sides
√[x+1]²=±√9
x+1=±3
x=3-1 or -3-1
x=2,4
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