Unit 0 Quiz Review

Simplifying Expressions

100

6x²-6x+1+3x+x²

7x²-3x+1

200

-x+3+4+2+x

9

300

x²-y²+x+y²+1

x²+x+1

400

6x(1+1)³+2x

50x

500

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

3x+3y+9-2y+3x

6x+y+9

Solving Equations

100

-7a+28=7

a=3

200

(-z/5)-37=-18

z=-95

300

-6(-3x-1)+2=8x+7

18x+6+2=8x+7

18x +8 = 8x + 7

18x = 8x -1

10x = -1

x = -1/10

400

-(10x+10)=7+3(-10x-8)

-10x-10=7-30x-24

-10x-10= -30x - 17

-10x = -30x -7

20x= -7

x = -7/20

500

4x+2(x-1)+4= 4x +2x

4x+2x-2+4 = 4x+2x

2x+2=2x

2=0

NO SOLUTIONS

Solving Inequalities

100

-7x + 6x > -25

x > -3

200

What MUST you do when you divide or multiply by a negative number while solving for an inequality?

FLIP THE SIGN!!

300

-2x-76 > -66

-2x > 10

x < -5

FLIPPED SIGN

400

-7 - 8x > 43 + 2x 

-7 -8x > 43 + 2x 

-7 - 10x > 43

-10x > 50

x < -5

FLIPPED SIGN

500

The quotient of x and 2 is greater than 3. Write this as an inequality and SOLVE.

x/2 > 3

x > 6

Think how do I undo division?

PEMDAS

100

3 - [(1+2)²-1] Simplify

3 - [(3)²-1]

3 - [9-1]

3 - [8]

3-8

-5

200

When solving for an equation, you end up with 

-4x = 8

How will you get x by itself?

-4 is being multiplied to x 

opposite of multiplication is division.

x = -2

300

You solve for an inequality and your final answer is 

-x/3 = 5

What step are you missing?

Must multiple by -3 on both sides to isolate x

x = -15

400

3+[3(x-3)-2]

3+[3x-9-2]

3+3x-11

3x-8

500

1-2³

1-8

-7

Literal Equations

100

xy=2

Solve for x.

x=y/2

200

(bz+5)/3=x

Solve for z

bz+5=3x

bz=3x-5

z=(3x-5)/b

300

x+3x-yz=5

Solve for z

4x-yz=5

-yz=5-4x

z= -(5-4x)/y

400

(ab)/c=3

solve for b.

(ab)/c=3

ab=3c

b=3c/a

500

2x-y²=4

Solve for x.

x=(y²+4)/2