Question

expand (x+2y+4z)^2 using suitable identities plz help me

Answer 1

${\huge{\sf{\green{\underline{\underline{Solution}}}}}}$

$(x+2y+4z) {^2}$

$x{^2}+4y{^2}+16z{^2}+2(x)(2y) +2(2y) (4z) +2(4z) (x)$

$x{^2}+4y{^2}+16z{^2}+4xy+16yz+8zx$