Question

7xy (3 xy + 4 x²y³ - 2 x³y⁴)

Answer 1

Respuesta:

Saludos...

Explicación paso a paso:

$7xy\left(3xy+4x^2y^3-2x^3y^4\right)\\\\\\=7xy\cdot \:3xy+7xy\cdot \:4x^2y^3+7xy\left(-2x^3y^4\right)\\\\\\=7\cdot \:3xxyy+7\cdot \:4x^2xy^3y-7\cdot \:2x^3xy^4y\\\\\\=21x^2y^2+28x^3y^4-14x^4y^5$