The correct option is D a2+2ab+b2 c2 (a+b+c)(a+b c) =(a^2 + ab + ac + ab + b^2 bc ac + bc c^2) = (a^2 + 2ab + b^2 c^2) ...

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Algebraic Identities

a+b+ca+b-c=

Question

(a+b+c)(a+b-c) = ___.

a²+2ab-c²

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a²+4ab+b²-c²

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a²+2ab+b²

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a²+2ab+b²-c²

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Solution

The correct option is D
a²+2ab+b²-c²

$(a + b + c) (a + b - c)$
$= (a^{2} + a b + a c + a b + b^{2} - b c - a c + b c - c^{2})$
$= (a^{2} + 2 a b + b^{2} - c^{2})$

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$(a + b + c) (a + b - c)$ = ___.

$(a + b + c) (a - b - c)$ = ______

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