Question

ayudaa porfa........​

Answer 1

Explicación paso a paso:

$1) 2a(3ax+9ay-5a^{2} z)=6a^{2} x+18a^{2} y-10a^{3}z$

$2)(-4x^{3}y)(-3x^{2} y+2x^{3}-7y^{3} )=12x^{5}y^{2} -8x^{6}y+28x^{3} y^{4}$