Answer:
x = 2√174, -2√174
x ≈ 26.38
Explanation:
23² + x² = 35²
529 + x² = 1225
-529 -529
----------------------
x² = 696
√x² = √696
x = 2√174, -2√174
----------------------------------------------------------------------------------------------------------
b = √c² - a²
b = √35² - 23²
b ≈ 26.38
I hope this helps!