Answers

2016-06-23T17:19:42+08:00
X-10= -2

Well if you need to extract the square roots, the x needs a ^2. Meaning it is raised to two.

x^2-10=-2

x^2=10-2 (transpose, therefore the sign is changed)
x^2=8

Now we get the square roots of each side.

x²=√8
The 2 in x will be cancelled.

x= 2√2
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