SOLUTION: Find the LCD of 7 8 ----------- ---,------ a^2 + 2a - 63 a+9

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Question 69220: Find the LCD of
7 8
---------------,------
a^2 + 2a - 63 a+9
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
a^2+2a-63=(a-7)(a+9) thus the common denominator is (a-7)(a+9):