Question

expand each of the following with the help of suitable identities (X+2y+4z)²​

Answer 1

Answer:

(a+b+c)^2=$a^{2} +2ab+2bc+2ca+b^{2} +c^{2}$

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

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

Step-by-step explanation: