how do i find the answer to the problem 5(5b^2 5(4b-(5-b)))

Algebra
Tutor: None Selected Time limit: 1 Day

grouping symbols 

Sep 10th, 2015

Thank you for the opportunity to help you with your question!

5(5b^2 5(4b-(5-b)))

= 5(5b^2 5(4b -5 +b))
=5 (5b^2 5(5b-5))
=5(5b^2(25b - 25))
= 5*5(25b^3 - 25b^2)
= 625b^3 - 625b^2

it can also be written as
=625b^2(b-1)

Let me know incase you need any further help ! Thanks :)
Sep 10th, 2015

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