Question

(3m+2)² + 10(3m+2)+21​

Answer 1

Answer:

9m² + 42m + 45

Step-by-step explanation:

=> (3m + 2)² + 10(3m + 2) + 21

=> 9m² + 4 + 12m + 30m + 20 + 21

=> 9m² + 42m + 45

Answer 2

Answer:

(3m+2) ^2+10(3m+2) +21.

=(3m+2) ^2+30m+20+21.

=(3m) ^2+2*3m*2+(2) ^2+30m+41.

=9m^2+12m+4+30m+41.

=9m^2+42m+45.

=9m^2+(27+15) m+45.

=9m^2+27m+15m+45.

=9m(m+3) +15(m+3).

=(9m+15) (m+3).

Hope this helps u