Answer:
x=±11
Step-by-step explanation:
To solve, we need to isolate the variable x,
To do this, take the square root of both sides
[tex]x^{2} =121\\\sqrt{x^{2} } =\sqrt{121}[/tex]
x=±11
It is positive or negative 11 because 11^2 (11*11)=121, but -11^2 (-11*-11) also equals 121 because 2 negatives multiplied become a positive.
