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Question

When we add 5a2b+6ab+7bc+54 to 14ab+8bc+16, we will get:


A

b + 20ab + 7bc + 70

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B

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

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C

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

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D

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

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Solution

The correct option is D

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


5a2b+6ab+7bc+54 + 14ab+16+8bc

=5a2b+(6ab+14ab)+(7bc+8bc)+(54+16)
=5a2b+20ab+15bc+70


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