Question

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Answer 1

$a) \: pq(p + 5) + 2r \\ = 2 \times 3(2 + 5) + 2( - 1) \\ = 6 \times 7 - 2 \\ = 42 - 2 \\ = 40 \\ \\ b) \: 12p(q - r) \\ = 12 \times 1(5 - 3) \\ = 12 \times 2 \\ = 24$
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