Question

Simplify
(5x + 7y)³
with this formula (a+b)³​

Answer 1

Answer:

(5x + 7y)³ = (5x)³+(7y)³+3 × (5x)²× 7y+3 × 5x × (7y)²

(5x + 7y)³ = 125x³+343y³+21y × 25x²+15x × 49y²

(5x + 7y)³ = 125x³+343y³+ 525 x²y + 735xy²

hope it will help you dear