SOLUTION: Factor each completely. 42r^3−49r^2+18r−21

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Question 1084713: Factor each completely.
42r^3−49r^2+18r−21
Found 2 solutions by MathLover1, MathTherapy:
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

42r%5E3-49r%5E2%2B18r-21............rearrange terms
42r%5E3%2B18r-49r%5E2-21........group
%2842r%5E3%2B18r%29-%2849r%5E2%2B21%29 ...factor out common terms
6r%287r%5E2%2B3%29-7%287r%5E2%2B3%29
%286r+-+7%29+%287r%5E2+%2B+3%29

Answer by MathTherapy(10555) About Me  (Show Source):
You can put this solution on YOUR website!

Factor each completely.
42r^3−49r^2+18r−21
42r%5E3+-+49r%5E2+%2B+18r+-+21

7r%5E2%286r+-+7%29+%2B+3%286r+-+7%29

highlight_green%28%287r%5E2+%2B+3%29%286r+-+7%29%29