Question

What is the value of x in simplest radical form ?

Answer 1

Https://www.youtube.com/watch?v=zsEC8A_3QXw

Answer 2

Solve for X (hypotenuse)

Hypotenuse = $\sqrt{a^{2}+b^{2}}$

Substitute 20 for A and 21 for B
$\sqrt{20^{2}+21^{2}}$

Solve exponents
20^2 = 400
21^2 = 441
Hypotenuse = $\sqrt{400 + 441}$

Add
400 + 441 = 841
Hypotenuse = $\sqrt{841}$

Solve square root
$\sqrt{841}$ = 29
Hypotenuse = 29