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Question

2ab+3bc+4ba−2cb+3ab+8bc equals


A

9ab+13bc

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B

9(ab+bc)

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C

7ab+13bc

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D

13(ab+bc)

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Solution

The correct option is B

9(ab+bc)


2ab+3bc+4ba2cb+3ab+8bc

= 2ab+3bc+4ab2bc+3ab+8bc

= (2ab+4ab+3ab)+(3bc2bc+8bc)

= 9ab+9bc

= 9(ab+bc)


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