Solving Quadratic Equations by Factoring

Multiplying Polynomials

100

(x+3)(x-7)

x²-4x-21

200

(x+4)(2x+18)

2x²+26x+72

300

(2x-7)(3x+9)

6x²-3x-63

400

(2n+1)(3n+5)

6n²+13n+5

500

(2x+1)(2x-1)

Must name what type of polynomial this creates...what special case??

4x²-1

Leading Coefficient of 1

100

3x²+6x

x=0, x=-2

200

v²-7v+6=0

v=1 or v=6

300

x²-16

x=-4 or x=4

400

r²+7r+12=0

r=-4 or r=-3

500

p²-9p+20=0

p=5 or p=4

Slide and Divide

100

3n²-13n+4=0

n=1/3 or n=4

200

3x²-8x+4=0

x=2/3 or x=2

300

10x²+x-3=0

x=1/2 or x=-3/5

400

3a²-19a+20=0

a=4/3 or a=5

500

4v²-1=0

v=-1/2 or v=1/2

Not in Standard Form

100

n²+7n+14=2

n=-4 or n=-3

200

5p²+1=9p-3

p=4/5 or p=1

300

4x²-2x=10x

x=0, x=3

400

15m²-2=-m

m=-2/5 or m=1/3

500

14n²-7n-5=-n²-1

n=-1/3 or n=4/5

Wildcard

100

r(3r+5)=0

already factored...what are the solutions??

r=-5/3 or r=0

200

Why did the student get upset when his teacher called him "average"?

It was a MEAN thing to say.

"Mean" = "average" in math hahahaha

300

Give three other words for "solutions"

Remember Math ROXS

Roots

Zeros

X-Intercepts

400

How do billboards talk?

Sign Language

500

How does a rancher keep track of his cattle?

with a COW-culator