Question

(3x+y)² = ajudem a responder pessoal

Answer 1

$(3x)^{2} +2*3x*y+ y^{2} => 9x^{2} +6xy+y^{2}$

Answer 2

(3x + y)²

(3x + y)(3x + y)

9x² + 3xy + 3xy + y²

9x² + 6xy + y²