SOLUTION: Help? Factor the expression by grouping. Show your work. 24q^7 – 42q^4r + 36q^3r^2 – 63r^3

Algebra ->  Equations -> SOLUTION: Help? Factor the expression by grouping. Show your work. 24q^7 – 42q^4r + 36q^3r^2 – 63r^3       Log On


   

Question 460570: Help? Factor the expression by grouping. Show your work.
24q^7 – 42q^4r + 36q^3r^2 – 63r^3

Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

24q^7 – 42q^4r + 36q^3r^2 – 63r^3
= 6q^4(4q^3 - 7r) + 9r^2(4q^3 -7r)
= (4q^3-7r)(6q^4+ 9r^2)
= 3(4q^3-7r)(2q^4+ 3r^2)