Thursday

September 3, 2015
Posted by **Isis** on Wednesday, February 27, 2013 at 6:17pm.

1) 5/12+7/18-5/6

2) 3x/x-1-1/x=_____/x^2-1x

3) x+1/x^2-5x+6-3x+11/x^2-x-6=

4)2x^2-3x-1

5) 3x^2+2x-2

6) x^2-3x-9

4-5 with formula

-B+_sqrt(B)^2+(-4)(A)(C)/2A

please help!

- Pre-calculus -
**Steve**, Wednesday, February 27, 2013 at 6:28pmfor the fractions, some parentheses or at least spaces would help designate what the factors are

2x^2-3x-1 : x=(3±√17)/4

3x^2+2x-2 : x=(-2±√28)/6 = (-1±√7)/3

x^2-3x-9 : x=(3±√45)/2 = (3±3√5)/2

Just plug in the numbers. What's the problem?