For this case we have the following expression:
\(x^2=100\)
From here we clear x, obtaining two possible results:
\(x = +/- \sqrt{100}\)
\(x1=+\sqrt{100}=10\)
\(x2=-\sqrt{100}=-10\)
Therefore we must evaluate the second expression for both values of x:
For x = 10:
\(x^2-x=(10)^2-10
x^2-x= 100-10
x^2-x=90\)
For x = -10
\(x^2-x=(-10)^2-(-10)
x^2-x= 100+10
x^2-x=110\)
