Question

(5x + 7y)2 – (5x - z)(5x + z)

Answer 1

Answer:

49y² + 70xy -z²

Step-by-step explanation:

(5x+7y)² - (5x-z)(5x+z)

=> (25x² + 49y² + 70xy ) - (25x² -z²)

=> 25x² + 49y² + 70xy - 25x² -z²

=> 49y² + 70xy -z²

Answer 2

Step-by-step explanation:

(5x+7y) 2-(5x-z) (5x+z)

10x+14y-(5x²-z²)

10x+14y-5x²+z²

IF IT HELPS YOU MARK AS BRAINLIEST...