Question

Are 4(-2b+5) and 2(-4b+10) are equivalent expressions

Answer 1

Yes they are. Let’s distribute to make sure.

4(-2b+5)
4 x -2b is -8b
4 x 5 is 20 which gives you

-8b+20

2(-4b+10)

2 x -4b is -8b
2 x10 is 20
Which also gives you -8b+20

Answer 2

Yes

Explanation:

they are both −8b+20