Math Lab Ch 1 Review

Imaginary

100

Solve: 

2x^2+8=0

+-2i

200

Simplify: 

(4+2i)-(3-i)

1+3i

300

Solve: 

(x-3)^2+12=5

x=3+-isqrt(7)

400

Simplify:

(2+3i)(4-i)

11+10i

500

Simplify: 

5/(3-2i)

(15-10i)/13

Quadratic Formula

100

Write down the quadratic formula.

(-b+-sqrt(b^2-4ac))/(2a)

200

Solve: 

x^2-3x-3=0

(3+-sqrt(21))/2

300

Solve: 

3x^2+x+1=0

(-1+-isqrt(11))/6

400

A ball is dropped from a height of 42 feet. Find how long it takes to hit the ground.

h=-16t^2+s

1.62s

500

A football is punted with a vertical velocity of 55 feet per second. The ball is 3 feet above the ground when the contact is made. How long is the ball in the air?

h=-16t^2+vt+s

3.49 s

Graphing

100

Graph: 

y=x^2+4x-2

Vertex: 

(-2,-6)

Y-int: 

(0,-2)

200

What is the vertex of: 

y=2(x-1)^2-4

(1,-4)

300

Graph: 

y=-1/2(x+2)^2+5

Vertex: 

(-2,5)

Y-int: 

(0, 3)

400

Graph: 

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

Vertex: 

(1, -8)

X-ints:

(3,0) and (-1,0)

500

Graph: 

y<-2x^2+4x+1

Vertex:

(1,3)

Y-int:

(0,1)

Shade: Underneath

Solving

100

9x^2+3=273

+-sqrt(30)

200

x^2-8x+12=0

x=2, 6

300

5x^2-7x-6=0

x=-3/5, 2

400

x^2+6x-10=0

x=-3+-sqrt(19)

500

x^2+14x+63=0

x=-7+-isqrt(14)

Mr. K

100

How old is Mr. K?

28

200

What is Mr. K's son's name?

Graham

300

What type of fruit does Mr. K always throw around?

Orange

400

Mr. K's wife teaches at what school?

Highland Christian

500

How many years has Mr. K been at Illiana (including this one)?

4