Question

solve this question​

Answer 1

Answer:

answer is 58................

Answer 2

Answer is 58

Explanation :

Given, 3x - 7y = 10

Square on both side, we get

⇒ (3x - 7y)² = 10²

⇒ 9x² + 49y² - 42xy = 100

⇒ 9x² + 49y² - 42 * (-1) = 100

⇒ 9x² + 49y² + 42 = 100

⇒ 9x² + 49y² = 100 - 42

⇒ 9x² + 49y² = 58