Question

use a sustainable property to find the product of (2a+7) (2a+7)please answerr fast i will follow you and mark your answer as brainliest​

Answer 1

Step-by-step explanation:

2a−7)(2a−7)=(2a−7)

2

using identity (a−b)

2

=a

2

−2ab+b

2

(2a−7)

2

=(2a)

2

−2×2a×7+7

2

(2a−7)

2

=4a

2

−28a+49

Answer 2

4a2+28a+49

Step-by-step explanation:

(2a + 7) (2a+7)

(a+b)(a+b)

we can write it as (a+b)2 = a2 + 2ab+ b2

therefore , (2a+7)2= 4a2 + 2*2a*7+ 49

(2a+7)2= 4a2+28a+49