Question

quadratic equations

Answer 1

$x {}^{2} + bx + c = 0$

Answer 2

Hey mate, here is your answer :

In algebra, a quadratic equation is any equation having the form. where x represents an unknown, and a, b, and c represent known numbers such that a is not equal to 0. If a = 0, then the equation is linear, not quadratic. 
Factoring by inspection. It may be possible to express a quadratic equation ax2 + bx + c = 0 as a product (px + q)(rx + s) = 0. ... Solving these two linear equations provides the roots of the quadratic. For most students, factoring by inspection is the first method of solving quadratic equationsto which they are exposed.

Hope this answer helps you...