This

**preview**shows page 1. to view the full**4 pages of the document.**8/27/2018

1.4- Quadratic Equations

1. Zero-Product Property (use every time we factor)

If then a=0 or b=0

Ex. Solve-

(x-5)(x+1)=0

x-5=0 or x+1=0

x=5 x=-1

ex. Solve-

2x^2-x-3=0 Standard form- everything on one side and 0 on the other

(2x-3)(x+1)=0 Using the guess and check method

If you get the opposite, switch the signs of the numbers. If you get a

completely wrong number, switch which parentheses the numbers are in.

Product Using the AC method

-6 2x times -3x should be -6 and 2x+-3x should be -1

2x -3x A=2, B=-1, C=-3

-1

Sum^

(factor)

Common Common

Factor Factor

2x(x+1) -3(x+1) =0

(x+1)(2x+3)

X+1=0 2x-3=0

X=-1 2x=3

X=3/2

###### You're Reading a Preview

Unlock to view full version