Question

Make b the subject of the formula, a=the square root of b-a

Answer 1

Explanation:

`a = √(b - a)`

firstly square

`√(b- a)`

to get a-b on it's own

it's now

`a = b - a`

now plus the a to cancel out the minus a to get

`a {}^(2) = b`

which can also be written as

`b = a {}^(2)`

dont know if that makes sense as I'm not the best at trying to explain