Question

what is your answer when you factorise 81-49m²​

Answer 1

Answer:

( 9 + 7m ) ( 9 - 7m)

Step-by-step explanation:

81 - 49m^2

=9^2 - ( 7m )^2

=( 9 + 7m ) ( 9 - 7m )

{•°• a^2 - b^2 = (a+b) (a-b)}

Answer 2

Step-by-step explanation:

ans is (7m + 9) (7m-9)

hope it helps you