Answer:
35x = (147)² - (135) ²
(147)² = 21,609
(135) ² = 18,225
35x = 21,609 - 18225
35x = 3384
x = 96.686
Explanation:
Given - 35x = (147)² - (135) ²
Find square of both (147)² and (135) ²
Reform problem with the numbers squared (3x = 21,609 - 18225)
Subtract the two numbers
Reform problem with the difference of the numbers (3x = 3384)
Divide 3x and 3384 by 3 to get x by itself
Answer: x = 96.6857143
Round to get x = 96.687
I hope this helped!