Question

using the formula (a square 2 + 2ab + b square 2) solve the following
1. (5x + y + 2z) square 2
2. (-x - 2y - 3) square 2
3. (X + 2y + 72 ) square 2
4. (1/2 X - 1/3 y - 1/5 z) square 2

​

Answer 1

Answer:

1) 25x^2+y^2+4z^2+10xy+4yz+20xz

marks as brainliest