Question

pls find the answer
pls guys​

Answer 1

Step-by-step explanation:

1)i)(x+y+z)(x+y-z)

x(x+y-z)+y(x+y-z)+z(x+y-z)

x^2+xy-xz+xy+y^2-yz+xz+zy-z^2

x^2+2xy+y^2-z^2

ii)x^2(x-3y^2)-xy(y^2-2xy)-x(y^2-5x^2)

x^3-3x^2y^2-xy^3+2x^2y^2-xy^2+5x^3

6x^3-x^2y^2-xy^3-xy^2

III) 2x^2(x+2)-3x(x^2-3)-5x(x+5)

2x^3+4x^2-3x^3+9x-5x^2-25x

-x^3-x^2-16x

x^3+x^2+16x

Answer 2

refers to the attachment..

#hopeithelpsXD