Question

A=2x+y²/7 make y the subject of the formula

Answer 1

Answer:

y=√(7A-2x)

Step-by-step explanation:

A=2x+y²/7

Multiplying both sides by 7

7A=2x+y²

7A-2x=y²

Taking square root on both sides

y=√(7A-2x)

Answer 2

Start with

$a=2x+\dfrac{y^2}{7}$

Subtract $2x$ from both sides:

$a-2x=\dfrac{y^2}{7}$

Multiply both sides by 7:

$7a-14x=y^2$

Take the square root of both sides. Remember that this implies a double sign:

$y=\pm\sqrt{7a-14x}$