Question

Find the value of x. Write your answer in simplest form.

Answer 1

`x^(2) +x^(2) =9^(2) \iff 2x^(2) = 81`

`x^(2) = (81)/(2) \iff x = \sqrt{(81)/(2)} \iff x = (9)/(√(2) )\\`

`\implies x = (9√(2) )/(2)\\`