Question #8d120

1 Answer
Feb 13, 2018

x=sqrt(13) or

x~~3.60555128

Explanation:

The equation is x^2-2=11.

First, isolate the x term.

x^2color(red)(-2)=11color(red)(+2)

x^2=13

Now, you take the square root of x to get rid of the square symbol.

sqrt(x^2)=sqrt(13)

cancelsqrt(x)^cancel2=sqrt(13)

x=sqrt(13)

Since you cannot simplify farther, then the answer is

x=sqrt(13) or

x~~3.60555128