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kolbaska11 [484]
3 years ago
5

The solutions to (x + 4) ^2- 2 = 7 are​

Mathematics
1 answer:
Alona [7]3 years ago
7 0

Answer:

x = -1, -7

Step-by-step explanation:

(x+4)^2 -2 = 7

(x+4)^2 -9 = 0 (Taking 7 to the other side)

(x+4)^2 - 3^2 = 0

Now use the difference of two squares rule

[((x+4)+3).((x+4)-3)] = 0

[(x+7).(x+1)] = 0

Now solve for x

x = -1, -7

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