Question

A2+b2 = C2solve for a

Answer 1

$a^2+b*2=c^2$ 

$a^2+2b=c^2$  $\text{Regroup terms}$ 

$a^2=c^2-2b$  $\text{Subtract 2b from both sides}$ 

$a=\pm \sqrt{c^2-2b}$  $\text{Take the square root of both sides}$