Question

(x+2y+3z)²expand using identies​

Answer 1

Step-by-step explanation:

We know that (a+b+c)^2=a^2+b^2+c^2+2(ab+bc+ca)

=x^2+4y^2+9z^2+2(2xy+6yz+3xz)

=x^2+4y^2+9z^2+4xy+12yz+6xz