Question

expand the following:
1. (x -2y+3z)
2.(-5+2y+z square)​

Answer 1

Answer:

(x+y+z)=x sq.+y sq. + z sq. + 2xy + 2yz+ 2zx

(1) =x2+ (-2y)2+(3z)2+2× x × (-2y) 2×-2y×(3z)+2×3z×x

xsq. +4y sq.+ 9z sq.-4xy-12yz+6zx