Answer
SOLUTION
$\frac{(2+x)(3-x)}{x(x-1)} \geq0$
INTERVAL
[-2,0) (1,3]
GRAPH
in the real number line put four numbers. Put an open circle in 0 and 1. Put a close circle in -2 and 3. Connect the -2 and 0 and connect the 1 and three.
Work Step by Step
$\frac{6}{x-1}-\frac{6}{x} \geq1$
$\frac{6}{x-1}-\frac{6}{x}-1 \geq0$
$\frac{6(x)-6(x-1)-1(x^{2}-1)}{x(x-1)} \geq0$
$\frac{6x-6x+6-x^{2}+x}{x(x-1)} \geq0$
$\frac{x-x^{2}+6}{x(x-1)} \geq0$
$\frac{(2+x)(3-x)}{x(x-1)} \geq0$
You need to see what are the solutions of the inequality.
Key numbers:
NUMERATOR x=-2 x=3
DENOMINATOR x=0 x=1
INTERVALS
$(- \infty,-2] [-2,0) (0,1) (1,3] [3,\infty)$
test the values to know if there is a solution.
$(- \infty,-2]$ $y(-4)=\frac{(2-4)(3+4)}{-4(-4-1)} \geq0= y(-4)=-0.7$
No solution.
$[-2,0)$ $y(-1)=\frac{(2-1)(3+1)}{-1(-1-1)} \geq0= y(-1)=2$
Solution.
$(0,1)$ $y(0.5)=\frac{(2+0.5)(3-0.5)}{0.5(0.5-1)} \geq0= y(0.5)=-25$
No solution
$(1,3]$ $y(2)=\frac{(2+2)(3-2)}{2(2-1)} \geq0= y(2)=2$
Solution.
$[3,\infty)$ $y(6)=\frac{(2+6)(3-6)}{6(6-1)} \geq0= y(6)=-0.8$
No solution.
CORRECT
[-2,0) (1,3]
GRAPH
in the real number line put four numbers. Put an open circle in 0 and 1. Put a close circle in -2 and 3. Connect the -2 and 0 and connect the 1 and three.
