Question

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Answer 1

Answer:

$3x(4x - 3y) + 4y(4x - 3y) \\ 12x {}^{2} - 9xy + 16xy - 12y {}^{2} \\ 12x {}^{2} - 12y {}^{2} + 7xy$

Step-by-step explanation:

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Answer 2

Answer:

(66)²

(60+6)=[a+b]=a²+2ab+b²

=(60)²+2×60×6+(6)²

=3600+1920+36

=5556

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