The expansion of the algebraic identity x - a x - b is-A- x2-a b x-2 a bB- x2-a-b x-2 a bC- x2-a-b x-a bD- x2-a b x-a b

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The expansion of the algebraic identity $(x + a) (x + b)$ is:

$x^{2} + a b x + 2 a b$

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$x^{2} + a b x + a b$

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$x^{2} + (a + b) x + a b$

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$x^{2} + (a + b) x + 2 a b$

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The expansion $(x + a) (x + b)$ is

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(x + a) (x + b) = x^{2} + (a + b) x + a b

(2 + x) (2 - y)

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