Question

help me to find this answer plz

Answer 1

Answer:

129

Step-by-step explanation:

5x - 2y = 7

xy = 2

(5x - 2y)² = 25x² + 4y² - 20xy

7² = 25x² + 4y² - 20 × 2

25x² + 4y² = 49 + 40

25x² + 4y² = 89

(5x + 2y )² = 25x² + 4y² + 20xy

( 5x + 2y )² = 89 + 2 × 20

( 5x + 2y )² = 89 + 40

( 5x + 2y )² = 120