Learn about factoring expressions in the form of x2 + bx + c. It's fun I swear.
Descriptions, a video, and some fun pictures will teach you all about factoring expressions in the form of x2+bx+c. The x2 is x squared, but I am unable to write exponents in the summary or title.
FACTORING is splitting a number of expression into smaller parts. Those parts multiply together to equal the original number.
For example:
6
can be made with 2 x 3 or 6 x 1
Therefore, factors of 6 are 2 & 3 and 6 & 1
Factors can be taken from expressions too. It's a bit trickier, but not impossible. This packet will show you how to factor expressions in the form of x^{2} + bx + c.
Factoring is just like dividing a section into smaller parts, so it is easier to conquer!
Some things to know before going forward: FOIL-ing is the method of multiplying two binomials, First Outer Inner Last. Check out this awesome packet if you need to jog your memory. And in the next video, when I refer to "the last video," I mean this description.
Learn how to factor trinomials in the form of x2+bx+c. Feel free to turn off the sound, I just put the music in for fun.
Factors for the numbers change when either b or c are negative in the equation:
x^{2 }+ bx + c
Purplemath.com writer Elizabeth Stapel provides tips for deciding whether the factors will be positive or negative:
Source: Stapel, Elizabeth. "Factoring Quadratics: The Simple Case." Purplemath. Available from http://www.purplemath.com/modules/factquad.htm. Accessed 25 June 2010