Question

remove the brackets and simplify. (q+3r)(2q-r)

Answer 1

2q^2 -rq +3r2q -3r^2

--> then simplify further to get your answer.

Answer 2

I got, 2q^2 -5rq -3r^2 . correct?

Answer 3

It's + 5rq

Answer 4

because its 6rq-rq

Answer 5

So,
2q^2 +5rq -3r^2

Answer 6

isnt it -rq +6rq ?

Answer 7

Yes, but that's the same as +5rq

Answer 8

-(1)rq + (6)rq

Answer 9

oh, ok.

Answer 10

now I get it.