Question

Help me out with this math problem for 50 points!!!

Answer 1

2(5a+3b)+5a+2b

=10a+6b+5a+2b

=15a+8b

6y+2(3x+5)+2y+3

=6y+6x+10+2y+3

=8y+6x+13

8r+8r^2+6r^2+2r+r

=9r+14r^2