Question

expand (x+2y+4z)² using suitable iedinty
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Answer 1

Step-by-step explanation:

We need to expand (x+2y+4z)^2

We know appropriate identity (x+y+z)^2

=x^2+y^2+z^2+2xy+2yz+2xz

Therefore, the value of (x+2y+4z)

2

is

=x

2

+(2y)

2

+(4z)

2

+2(x)(2y)+2(2y)(4z)+2(x)(4z)

=x

2

+4y

2

+16z

2

+4xy+16yz+8xz

Hope it helps:)