20

TRYIT:FindtheLCMforeachsetofexpressions.

EX3//AddRationalExpressionswithUnlikeDenominators! + 3!! − 1+

2!! − 3! + 2

TRYIT:

!. ! + 6!! − 4+2

!! − 5! + 6 !. 2!3! + 4+

4!! − 11! − 126!! + 5! − 4

21

EX4//SubtractRationalExpressions

! + 1!! − 6! − 16−

! + 1!! + 6! + 8

TRYIT:

!. 13! +16! −

1!! !. 3! − 5!! − 25−

2! + 5