Solve for k
k=-620
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-k+5=625
Square both sides of the equation.
-k+5-5=625-5
Subtract 5 from both sides of the equation.
-k=625-5
Subtracting 5 from itself leaves 0.
-k=620
Subtract 5 from 625.
\frac{-k}{-1}=\frac{620}{-1}
Divide both sides by -1.
k=\frac{620}{-1}
Dividing by -1 undoes the multiplication by -1.
k=-620
Divide 620 by -1.
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