Question

(√2x+7y-8z) square





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Answer 1

Answer:

$just \: apply \: the \: formula \\ (a + b + c)^{2} = {a}^{2}+{b}^{2}+ {c}^{2} + 2(ab + bc + ca) \\ where \: a = \sqrt{2}x \\ b = 7y \\ c = - 8z$

Step-by-step explanation:

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