Find the product 2 x -72 x -7 using identities- A- 2 x2-49B- 4 x2-28 x-49- 4 x 2-49D- 4 x2-14 x-49

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Question

Find the product $(2 x + 7) (2 x - 7)$ using identities.

2 x^{2} - 49

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4 x^{2} - 28 x + 49

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4 x^{2} - 49

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4 x^{2} - 14 x - 49

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x \geq 4, A^{2} = x^{2} + 12 x + 36

B^{2} = 4 x^{2} - 28 x + 49

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4 x^{2} - 28 x + 49 = 0

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