1) use the quadratic formula to evaluate 2X^2 - 3X + 9=0.

2) Add 1/7 + 1/3 + 2.

3) Calculate 1/7 / 7. Is it = 1 or 1/49? Which is correct and why?

4) Calculate 1/7/ (1/2).

5) Calculate 2/ (1+ sqrt(3)) (sqrt is the square root function).

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## This question was asked on Jan 14, 2013 and answered on Jan 16, 2013.

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