Question

multiply (2a-7)(2a-7)​

Answer 1

Answer:

(2a-7)^2

using (a-b)^2 = a^2+b^2-2ab

(2a)^2+7^2-2×2a×7

4a^2+49-28a

Answer 2

Step-by-step explanation:

2a(2a-7) - 7(2a-7)

4a Square - 14a - 14a + 49

4a Square - 28a + 49 is the answer of this question.

Hope it's helpful to you.