Solve each quadratic inequality. Apply the following steps in solving:


Step 1: Express the quadratic inequality as quadratic equation in standard form.

Then solve for the roots of this equation.

Step 2: Plot the roots of the quadratic equation as the critical points in the number

line and determine the three intervals

Step 3: Test a point from each interval to determine if they are part of the

solutions.

Step 4: Test also the critical points, if they are part of the solutions.

Step 5: Sketch the solutions on the number line. If the test point is a solution,

shade the region it is located. It means that all numbers in that interval are

part of the solution set.

Step 6: Write the solutions to the inequality using the interval notation.

1.x²+5-6≥0

2.x²-1≤0

3.x²-2x-3≥0

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