Using the identity $(x + a) (x + b),$ the value of $(2 a - 1) (2 a + 2)$

4 a^{2} + 2 a - 2

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- 4 a^{2} + 2 a + 2

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2 (2 a^{2} + a - 1)

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4 a^{2} + 2 a + 2

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Solution

The correct option is A $4 a^{2} + 2 a - 2$
$(2 a - 1) (2 a + 2)$
$= {4 a}^{2} - 2 a + 4 a - 2$
$= {4 a}^{2} + 2 a - 2$

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