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Question

(a+b+c)(a+b-c) = ___.



A

a2+2ab-c2

loader
B

a2+4ab+b2-c2

loader
C

a2+2ab+b2

loader
D

a2+2ab+b2-c2

loader

Solution

The correct option is D

a2+2ab+b2-c2


(a+b+c)(a+bc)
=(a2+ab+ac+ab+b2bcac+bcc2)
=(a2+2ab+b2c2)


Mathematics

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