Question

Please give thaw answer of question 4

Answer 1

Answer:

Take first two terms as a and last term as b and use (a-b)^2 or (a+b)^2 formula

Step-by-step explanation:

(x+2y+4z)^2

= (x+2y)^2 +2*(x+2y)*4z+ (4z)^2

= (x^2 +2*x*2y+4y^2) +8xz+ 16yz +16z^2

= x^2 + 4xy + 4y^2 +8xz+ 16yz +16z^2