Question

3x(-x +y+z)from the sum of 2z(x+y+z) and -4y(x-y+z)

Answer 1

Step-by-step explanation:

2z(x+y+z) = 2xz+2yz+2z^2

-4y(x-y+z) = -4xy+4y^2-4yz

3x(-x+y+z) = -3x^2+3xy+3xz

(2xz+2yz+2z^2 )+ (-4xy+4y^2-4yz )=

4y^2+2z^2-4xy-2yz+2xz

(4y^2+2z^2-4xy-2yz+2xz)-(-3x^2+3xy+3xz) =3x^2+4y^2+2z^2-xy-2yz+5xz