Question

(x-3y)²-(4x+y)² me ayudan a resolver. ​

Answer 1

Respuesta:

$(x -3y)^2 - (4x+y)^2\\\\(x^2 - 2(x)(3y) + (3y)^2) - ((4x)^2 + 2(4x)(y) + y^2)\\\\(x^2 - 6xy + 9y^2)-(16x^2 - 8xy + y^2)\\\\x^2 - 6xy + 9y^2 - 16x^2 - 8xy - y^2\\\\-15x^2 - 14xy + 8y^2\\\\-15x^2 + 8y^2 - 14xy$

Explicación paso a paso: