Question

use a suitable identify to get each of the following products (2a-7)(2a-7)​

Answer 1

Answer:

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

=(2a-7) square

Answer 2

$\Huge\underline{\underline{\sf Solution}}$

We know that ,

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

We can write (2a-7)(2a-7) as

${(2a - 7)}^{2}$

Overlap the formula written above on this equation.

Now ,

$= > {(2a)}^{2} + {(7)}^{2} - 2(2a)(7) \\ \\ = > 4 {a}^{2} + 49 - 28a$