Question

-2x+y+4z whole square

Answer 1

we know,(a+b)^2=a^2+b^2+2ab
In this qn,take (-2x+y)=a and 4z=b.
Try and let me know.

Answer 2

(-2x)square+(y)square+(4z)square+2•-2x•y+2•y•4z+2•-2x•4z =4xspuare +ysquare+16zsquare -4xy+8yz-16xz