Question

How do you factor by grouping `20g^3 — 4g^2 — 25g+5`?

Answer 1

`color(magenta)(= (5g-1)(4g^2-5)`

Explanation:

`20g^3-4g^2-25g+5`

Grouping the 1st 2 terms together & the 2nd 2 together.

`= 4g^2(5g-1)-5(5g-1)`

`color(magenta)(= (5g-1)(4g^2-5)`

~Hope this helps! :)