Question

In the formula a2 + b2 = c2, what is the value of a2?

Answer 1

A^2 + b^2 = c^2 Moving b^2 to RHS a^2 = c^2 - b^2

Answer 2

$a^2+b^2=c^2\ \ \ \ |subtract\ b^2\ from\ both\ sides\\\\a^2=c^2-b^2\\\\\boxed{a=\sqrt{c^2-b^2}}$