Question

Qual a resposta dessa conta:
(3/4x+2/5y)²

Answer 1

(3/4x+2/5y) (3/4x+2/5y)
9/16x² + 6/20x² + 6/20x² + 4/25x
9/16x² + 12/20xy + 4/25 y²
9/16x² + 3/4 xy + 4/25 y²