Math Is Fun Forum

Hello again! I've run into more math troubles, and I recently remembered this place. Pardon the long list, but I would really appreciate the help. Sorry for the big bump, but I figured since I found my old topic I might as well post in it.

a to the 5th(sorry, couldn't find alt code for 5) • a³ =

(2a²b)(-2ab³)

2to the 4th =

Name the property of real numbers illustrated by each of the following.

mn = nm

(3r + 2) + s =3r + (2 + s)

If 3x = 15 then 15 = 3x

Evaluate each of the the following if a = 3 and b = 4.

(ab)²

ab²

(a - b)³

Write each expression in exponential form.

x • x • y • y • y

a • b • b • a • a • a

x • (-x) • y • y • y

Adding

3x + 4
x - 6
___________

2x - 1
-x + 1
___________

Subtract the lower polynomial from the upper one.

6x + 9
- 2x + 4
____________

2x²y - 5xy² + 2
- x²y + 2xy² + 2
___________________________

Simplify.

(ab)³

(-3x)²

(-x²)³

-3x(x² + 2)

(x + 2)(x + 3)

(2x - 5)(3x + 2)

(2x + 5)(x² - x - 2)

Solve.

2/3(36x] - 6) = 68

Thanks in advanced!