Question

Make b the subject of the formula $a=\sqrt{b + 6$

Answer 1

Hi!

We want to solve for $b$

Given:

$a=\sqrt{b+6}$

Square both sides:

$a^2=\sqrt{b+6} ^2$

Simplify:

$a^2=b+6$

Subtract $6$ from both sides:

$a^2-6=b+6-6$

Simplify:

$a^2-6=b$

Flip:

$b=a^2-6$

Hence, $b$ is the subject of the formula.