Hi guys! Today we are going to cover a seemingly scary looking but a quite simple section of GRE Quant - ALGEBRA! There are going to be a lot of questions that you will encounter in your GRE that have an application of algebraic concepts. But do understand that the questions might look tough, but the underlying concept is just simple algebra. This post covers a part of algebra - Quadratic Equations. We have started with an overview of the topic followed by practice questions. In the subsequent sections, we will be posting more in relation to the concept. So, sit tight and keep practicing! Overview A quadratic equation is an equation of the form where x is unknown, and a, b and c are known constants. If a=0, then the equation is linear and not quadratic. The quadratic equation has two roots given by The nature of the roots is given by discriminant, D. If (1) D > 0 : The equation has two real roots and both roots are real and distinct. (2) D = 0 : The equations has only two real ...