Algebra Rocks

Factor that

100

3xy²+18xy

3xy(y+6)

200

a²-b²

(a-b)(a+b)

300

(a+b)w²+13w(a+b)+36(a+b)

(a+b)(w+4)(w+9)

400

7x²+6x-16

(7x-8)(x+2)

500

Complete the square:

X²+8x+____=(x+__)²

x²+8x+16=(x+4)²

It's all variable

100

-(x-2)-5(x-4)=46

x=-4

200

Simplify: 

(h/w)/(x/(w+h

(h^2+hw)/(wx)

300

Find y: 

x/y - 1/n -r = v

y= (nx)/(vn+1+nr)

400

Solve The System:

{3N_Q-2N_D=-4

{-3N_Q+N_D=-1

N_D=5

N_Q=2

500

Solve: 

2x^2-2=0

x=+-1

Geometry formulas

100

Circumference and area of a circle

2pir and pir^2

200

Midsegment of a trapezoid

1/2 (b_1+b_2)

300

Volume of a cone

1/3pir^2h

400

Surface Area Of a Right Solid

P_(base)xxHeight + 2xxA_(base)

500

Surface area of a sphere

4pir^2

You've got the power

100

7⁰

1

200

sqrt20

2sqrt5

300

-3^-3

-1/27

400

sqrt(x+4)-7=8

x=15^2-4

500

4/(7sqrt3

(4sqrt3)/21

Things!

100

The probability of landing on heads if you flip a coin twice

1/4

200

Slope Intercept Form of line passing through point (-6,-5) and parallel to the line 

y=-3/2x+1/3

y=-3/2x-14