Question

Can anyone give me the basic explanation of quadratics?

Answer 1

http://www.sosmath.com/algebra/quadraticeq/bdef/bdef.html

Answer 2

Quadratics are second degree polynomials of the form

ax^2+bx+c, where a not equal to 0

If ax^2+bx+c=0 then it is called a quadratic equation.

Answer 3

Okay, and what about quadratic models? @AravindG

Answer 4

It is the application of quadratics to real life situations.For example, A projectile thrown from a location follows a parabolic path. This can be expressed as a quadratic in x because geometrically the quadratic represent a parabola.

Answer 5

Okay nice, and what might be some good notes about completing squares? @AravindG

Answer 6

Heres a page from e-text (online textbook) it first shows you how to graph and then on page 8 it shows models. Hope it helps :)
http://cims.nyu.edu/~kiryl/Precalculus/Section_3.1-Quadratic%20Functions%20and%20Models/Quadratic%20Functions%20and%20Models.pdf

Answer 7

Quadratics may be expressed as a a perfect or as a combination of perfect squares and numbers. You will surely find many useful references on it online.

Answer 8

*perfect square

Answer 9

Well what is the process in completing the square? Is there a formula orrr?

Answer 10

Heres a good reference for efficient steps that can be helpful for test taking.
http://www.purplemath.com/modules/sqrquad.htm

Answer 11

It's actually a working procedure rather than a formula.

ax^2+bx+c =0 if it is not a perfect square add (b/2a)^2 on both sides.

Answer 12

Heres a better example

http://www.regentsprep.org/Regents/math/algtrig/ATE3/quadcompletesquare.htm

Answer 13

@Nanalew is providing very useful links. I hope your doubts are cleared.

Answer 14

Need any more help?

Answer 15

Hmm No I think I'm good, thanks both of you!!