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Expand (4x – 2y – 3z)^2 using identity.

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Expand (4x – 2y – 3z)2 using identity.

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(4x – 2y – 3z)2 = (4x)2 + (- 2y)2 + (- 3z)2 + 2 (4x) 

(- 2y) + 2 (- 2y) (- 3z) + 2 (- 3z) (4x) 

= 16x2 + 4y2 + 9z2 – 16xy + 12yz – 24zx.

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