Question

(2x - y + 3z)^2


Solve using the formula in the photo​

Answer 1

(2x-y+3z)^2

Let (2x-y) be one element

So,

{(2x-y)+3z}^2

{(2x-y)^2 +9z^2+6 (2x-y)z} [using (a+b)^2]

{4x^2+y^2-4xy+9z^2+12xz-6yz}

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

Hope it helps

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