Question

5b^2-15b=0 Am I suppose to factor first?

Answer 1

yes, then you have to apply zero property to get the values for b. since this is a quadratic equation, you'll have two answers.

what you do is,

factor b.
b(5b - 15) = 0

apply zero property.
b = 0
5b - 15 = 0 --> 5b = 15 --> b = 3

final answer:

b = 3
b = 0

Answer 2

so I divide 5b=15 divide each side by 5? I am studying for final on monday, so thanks sooo much

Answer 3

yeap. you divide both sides by 5 to get b only. good luck on your exam.