When we add 5 a 2 b + 6 a b + 7 b c + 54 and 14 a b + 8 b c + 16 , we get: Options: A . &nbsp 5 a 2 b + 20 a b + 7 b c + 70 B . &nbsp 5 a 2 b + 6 a b + 7 b c + 8 a c + 70 C . &nbsp 5 a 2 b + 16 a b + 7 b c + 8 a c + 70 D . &nbsp 5 a 2 b + 20 a b + 15 b c + 70

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

Question

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

Options:

A .

5 a^{2} b + 20 a b + 7 b c + 70

B .

5 a^{2} b + 6 a b + 7 b c + 8 a c + 70

C .

5 a^{2} b + 16 a b + 7 b c + 8 a c + 70

D .

5 a^{2} b + 20 a b + 15 b c + 70

Answer: Option D
:
D

$5 a^{2} b + 6 a b + 7 b c + 54$
$14 a b + 8 b c + 16$
________________________________
$5 a^{2} b + 20 a b + 15 b c + 70$

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