8th Grade Math

Solving For A Variable

100

Solve for X:

 
           5X-3X=4

X=2, Or 2=X

200

2x+22=-4

X=-13

300

4x-2=4

X= 1.5, or 1 1/2

400

x+2-5=7

X=10

500

7x-20=1

X=3

Simplifying

100

Simplify:

             X-3+6

X+3

200

x+3x+4-3

4x+1

300

3(2x+3)-2(2x+4)

2x+1

400

5[2-(3x+4)+2x]

-5x+10

500

5-3[2-(3x+5)-4x]+3

21x+17

Integers

100

The sum of 2 consecutive even integers =108

1:x=53

2:x+2=55

200

The sum of 3 consecutive odd integars is 513

1: X=169     

2: X+2=171

3: X+4=173

300

The sum of three consecutive odd integers equals 645

1: X=213

2: X+2=215

3: X+4=217

400

The sum of 4 consecutive integers equals 546

1: X= 135

2: X+1= 136

3: X+2= 137

4: X+3= 138

500

The sum of 5 consecutive even integers equals 680

1: X=132

2: X+2=134

3: X+4=136

4: X+6=138

5: X+8=140

Multiplying Polynomials

100

(X²+2)(x-3)

X³-3x²+2x-6

200

(4x³+2x²) (x+5)

4x⁴+22x³+100

300

(2x²+3x)(x-2)

2x³-4x²+3x²-6

400

(X³-5X²+4)(X+3)

X⁴-2X³-15X²+4X+12

500

(3x³+4x²-4)(2x+5)

6x⁴+23x³+20x²-8x-20

Vocabulary

100

Describe a Monomial

A Monomial is 1 term

200

What property would you use in this equation?

2(X+3)

You would use the distributive property.

300

What does P.E.M.D.A.S stand for

P- parentheses,

E- Exponents

M- Multiply

D- Division

A- Addition

S- Subtraction

400

Describe a Binomial

2 terms.

500

Describe and show an example of a trinomial

3 terms

(ex: x²+4x-5)