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lesya692 [45]
3 years ago
10

(x+4)^2=9 x=? help please!

Mathematics
2 answers:
Alenkasestr [34]3 years ago
5 0

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>

kifflom [539]3 years ago
3 0

Step-by-step explanation:

(x+4)²=9

x+4=±3

x=-1,-7

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