Question

Can you help me please?​

Answer 1

Answer:

B

Step-by-step explanation:

The Pythagoras theorem states that $c^{2} = a^{2} + b^{2$, where $c$ is the hypotenuse and a and b are the adjacent and opposite sides of the hypotenuse. If we made $a$ the subject of the expression, the expression will be re-written as $a^{2} = c^{2} - b^{2}$, which is the correct answer.