Question

Factor by grouping 7r3 - 8r2 + 42r - 48

Answer 1

(7r-8) (r^2 +6)

Explanation:

Answer 2

(7r-8) (r^2 +6)

Explanation:

7r^3 - 8r^2 + 42r - 48

In the first group factor out r^2 and in the last group factor out 6

r^2 (7r -8) + 6(7r - 8)

Factor out (7r-8)

(7r-8) (r^2 +6)