Question

use suitable identity and find product of (2a-5) (2a+5)
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Answer 1

Answer:

the mixture of gases that surrounds the earth or any other star, planet, etc.

Step-by-step explanation:

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Answer 2

Identity III:

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

By using identity III, we get

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