Question

hallar el producto notable de (7x +2y)²​

Answer 1

Respuesta:

$49 {x }^{2} + 28xy + 4 {y }^{2}$

Explicación paso a paso:

${(x + y)}^{2} = {x}^{2} + 2xy + {y}^{2}$

${(7x + 2y)}^{2} = {(7x)}^{2} + 2(7x)(2y) + {(2y)}^{2}$