Question

Expand using suitable identity: (2 x – y + 3z) 2

Answer 1

Step-by-step explanation:

4x-2y+6z is your answer

Answer 2

$\huge\underline\mathbb{ALGERBRA}$

By Using identity V i.e.

$(a + b + c)^{2} = a {}^{2} + b {}^{2} + c {}^{2} + 2ab + 2bc + 2ca$

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According to your question:-

$=>(2x)^{2} + ( - y)^{2}+ (3z)^{2} + 2(2x \times - y)2( - y \times 3z) + 2(3z \times 2x)$

$=> 4x^{2} - y {}^{2} + 9z^{2} - 4xy - 6yz + 12zx$

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