Question

Answer this question
please explain your answer

Answer 1

I hope it helps mate

Answer 2

AC= BC ( ISOSCELES TRIANGLE)
${ab}^{2} = {ac}^{2} + {bc}^{2} \\ {ab}^{2} = {ac}^{2} + {ac}^{2} \\ {ab}^{2} = 2 {ac}^{2}$
hence the answer is proved