Algebra 2 - Unit 2 Jeopardy

Zeros

100

Find the zeros for: f(x)=(x+2)(x-5)

x=-2 and 5

200

Find the zeros for: f(x)=(2x-4)(3x+9)

x=2 and -3

300

Find the zeros for: (2x-8)(-4x-8)

x=-4 and -2

400

Find the zeros for: f(x)=x²+5x+6

x=-2 and -3

500

Find the zeros for: f(x)=2x²+8x-10

x=1 and -5

Polynomial Intersections

100

Where do the functions, f(x)=x+2 and g(x)=-2x-4, intersect?

Intersection at (-2,0)

200

What is the first step to find polynomial intersections?

Set the equations equal to each other. 

300

Where do the functions, f(x)=x+2 and g(x)=(x+2)(x-5), intersect?

Intersection at (-2,0) and (6,8)

400

After multiplying/distributing your terms, what is the next step to find the polynomial intersections? 

Factoring

500

Where do the functions, f(x)=x-7 and g(x)=(x+4)(x-7), intersect?

Intersection at (7,0) and (-3,-10)

Division

100

Divide x³-8x²-10x+20 / x+2

x²-10x+10

200

What does DMSB stand for? 

Divide, Multiply, Subtract, Bring Down

300

What is the inverse (opposite) of polynomial DIVISION?

Multiplication

400

Divide 3x³-6x²-17x-28 / x-4

3x²+6x+7

500

Divide 4x³-26x²+30x+25 / 2x-5

2x²-8x-5

Domain

100

A reasonable domain for hours renting a bike:

0<x<24, including fractions

200

A reasonable domain for charge on your phone:

0<x<100, whole numbers

300

A reasonable domain for dollars in your bank account:

-100<x<500, including decimals

400

A reasonable domain for dollars earned per day, if you earn $15 per hour:

0<x<150, including decimals

500

A reasonable domain for minutes doing homework:  

0<x<120, including fractions

Factoring

100

Factor: 3x²+8x+5

(3x+5)(x+1)

200

Factor: 2x³+11x+14

(2x+7)(x+2)

300

Factor: 5x²+26x+5

(5x+1)(x+5)

400

Factor: 3x²+13x+14

(3x+7)(x+2)

500

Factor: 5x²+3x-8

(5x+8)(x-1)