Quadratic Inequalities

What quadratic inequalities mean

Upward-opening parabola crossing the x-axis at -5 and -2, with positive regions outside the roots and a negative region between them A quadratic inequality asks for all the values of $x$ that make a quadratic expression positive or negative, such as $x^2+4x+3>0$ . The roots are the key starting points because they are the values where the expression equals zero.