Question

Expand (2x+y+3z)2 sovle this question

Answer 1

Answer:

4x²+y²+9z²+4xy+6yz+12xz

Step-by-step explanation:

(2x+y+3z)²

We know

(x + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2zx.

So,

= (2x)²+(y)²+(3z)²+ 2(2x)(y)+ 2(y)(3z)+2(2x)(3z)

=4x²+y²+9z²+4xy+6yz+12xz