QUADRATIC INEQUALITIES

• Quadratic inequalities mean there are many possible solutions
• A solution of an inequality is any set of values of x for which the inequality is true
• Solving QI is similar to solving QE
• QIs use =/ instead of =
• its signs are >, <, >=, <=, =/
• a, b, and c are real numbers
• a must not be equal to 0
• returns positive is both factors are + or -
• returns negative if one of the factors is + or - and the other is the opposite sign
• there are two methods to solve quadratic inequalities, it is the inspection of signs and the parabola method