Question

Find the product( 6+5√7 ) ( 6 – 5√7 )

Answer 1

Answer:

-139

Step-by-step explanation:

(6+ 5√7) × (6-5√7)

or, = 6²- (5√7)²

As, a²-b²= (a+b) (a-b)

or, = 36- 25×7

or, = 36- 175

or, = -139. ANS

Plz mark it as brainliest.

Answer 2

ans is -139 acc to me

using identity-   (a-b)*(a+b)=a sq-b sq

---; 6 sq - 5root7 sq

36-175

=   -139

hope it helps:D