Question

Expand using suitable identity (-2x+5y-3z)^2

Answer 1

we have the identity (a+b+c) ^2=a^2+b^2+c^2+2ab+2bc+2ca

so,

(-2x) ^2+(5y)^2+(-3z) ^2+2(-2x) (5y) +2(5y)(-3z) +2(-2x)(-3z)

hope it will help u ✌✌✌