Question

Q.2 Find the product.
(a) (2x + 5)(2x - 5)​

Answer 1

Answer:

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Step-by-step explanation:

We know that

$(a+b)(a-b) = a^2 - b^2$

Here a = 2x and b = 5

So,

$(2x + 5)(2x - 5) = (2x) ^2 - (5)^2 \\ \\ (2x + 5)(2x - 5) = 4x {}^{2} - 25$