anonymous 5 years ago Use the quadratic formula to find the roots of the equation. Round to tenths place if necessary. 11x2 - x - 3 = 0 A. {-1, 1.2} B. {-11, 13.2} C. {-0.5, 0.6} D. no real solution

1. anonymous

$\frac{1\pm\sqrt{133}}{22}$

2. anonymous

c is closest

3. anonymous

Okay but its not positive? thats weird.. :P

4. anonymous

it is just not exact. it is right to the nearest tenth.

5. gw2011

Quadratic formula: x=[-b+/- square root (b^2-4ac)]/2a a=11 b=-1 c=-3 Substituting these into the formula, you get the answer as: x=[1+/- square root (133)]/22 square root 133=11.5 approximately (1+11.5)/22 and (1-11.5)/22 =12.5/22 and -10.5/22 =0.56 and -0.5 So, the closest answer is (c)=-0.5, 0.6