(x+4)^2=9
x=?
help please!
2 answers:
Answer:
x = -1
Step-by-step explanation:
<em>(x + 4)² = 9</em>
Find the square root of both sides so that the square is gone.
<em>√(x + 4)² = √9</em>
<em>x + 4 = ±3</em>
Get x along on one side by subtracting 4 from each side.
<em>(x + 4) - 4 = ±3 - 4</em>
<em>x = -1, -7</em>
Step-by-step explanation:
(x+4)²=9
x+4=±3
x=-1,-7
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