Question

expand the following
(x - 2y + 3z) ​

Answer 1

Answer:

hope it's help

Step-by-step explanation:

We take a=x,b=2y,c=3z in the expansion

(a+b+c)

2

=a

2

+b

2

+c

2

+2ab+2bc+2ca

We obtain

(x+2y+3z)

2

=x

2

+(2y)

2

+(3z)

2

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

2

+4y

2

+9z

2

+4xy+12yz+6zx