Question

Find the product using suitable identity : (2m – 3 ) (2m – 7 )​

Answer 1

Answer:

Step-by-step explanation:

Using the identity (a+b)(a+b)=a  ² +b ² +2ab

For the above expression, keeping a=2m and b=3, we get

(2m+3)(2m+3)=4m ²  +9+12m

Answer 2

Answer:

(2m - 3)(2m - 7) = 2m(2m - 7) - 3(2m - 7)

4m^2 - 14m - 6m + 21

4m^2 - 20m + 21