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How do you solve this by using square roots?


2(x-2)^2-8=-4

1 Answer

6 votes

Answer:

x = 2 ±
√(2)

Explanation:

isolate (x - 2)² by adding 8 to both sides and dividing by 2

2(x - 2)² = 4

(x - 2)² = 2 ( take the square root of both sides )


√((x-2)^2) = ±
√(2)

x - 2 = ±
√(2) ( add 2 to both sides )

x = 2 ±
√(2) ← solutions



User Merovex
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