How do you simplify the following

y^2 (y to the power of 2) = -4

is this problem unsolvable because you can't take the square root of a negative number?

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?