Question

(3-7a)(3+4a) evaluate usinsstandard formula
​

Answer 1

Step-by-step explanation:

(3-7a)(3+4a)

=> 3(3+4a) - 7a(3+4a)

=> 9+12a-21a-28a

=>9-9a-28a²

hope u like it....

please mark me as the brainliest answer....

Answer 2

Answer:

9-21a+12a-28a²

9-9a-28a²

-28a²-9a+9

its the answer

hope it will help you