We will start with the right triangle which has a leg x and the other leg is 4 x 2 = 8, and the hypotenuse of length 17

Then

Subtract 64 from both sides to find x^2

Take square root for both sides
![\begin{gathered} \sqrt[]{225}=\sqrt[]{x^2} \\ 15=x \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/high-school/ytotkkmtpr4m2ofryuj422tmsc0gcj0irn.png)
x = 15
To find y we will use the right triangle which has leg 4 and leg 15 and hypotenuse y
Take care opposite side to x must be equal to x

Take square root for both sides
![\begin{gathered} \sqrt[]{y^2}=\sqrt[]{241} \\ y=\sqrt[]{241} \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/high-school/cl2ofnboyyu28whd8z2pkltu0tpe9akix9.png)