SOLUTION: 77. X2POWER+2XY+3X+6Y 79. X2POWER Y-X2POWER-3Y+3 81. X4POWER-2X3POWER+X2POWER+X-1 FACTOR BY GROUPING MY ANS FOR 77. IS X2PWER-2Y-3X+6X IS THIS CORRECT HELP

Question 64454This question is from textbook beginning algebra
: 77. X2POWER+2XY+3X+6Y
79. X2POWER Y-X2POWER-3Y+3
81. X4POWER-2X3POWER+X2POWER+X-1
FACTOR BY GROUPING
MY ANS FOR 77. IS X2PWER-2Y-3X+6X IS THIS CORRECT HELP This question is from textbook beginning algebra

Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Factor by grouping:
77)
Group as shown by the parentheses.
Factor an x from the 1st group and a 3 from the 2nd group.
Now factor (x+2y)
...Done!
79)
Group as shown by the parentheses.
Factor from the 1st group and 3 from the 2nd group.
Now factor (y-1).
Normally this would be sufficient, but you could further factor the 2nd factor to get:

81)
Group as shown:
Factor from the 1st group.
Now factor the 1st group in parentheses.
Now factor (x-1)
Simplify.

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