When we add $5 a^{2} b + 6 a b + 7 b c + 54$ with $14 a b + 8 a c + 16$ , we will get:

b + 20ab + 7bc + 70

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b + 6ab + 7bc + 8ac + 70

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b + 16ab + 7bc + 8ac + 70

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b + 20ab + 7bc + 8ac + 70

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Solution

The correct option is D
b + 20ab + 7bc + 8ac + 70

$5 a^{2} b + 6 a b + 7 b c + 54$
$14 a b + 16 + 8 a c$
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$5 a^{2} b + 20 a b + 7 b c + 70 + 8 a c$

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