Questions on Algebra: Exponents and operations on exponents answered by real tutors!

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Question 777407: Divide & simplify:
((3x^2-12)/(x^2+x-6)) / ((2x^2+12x+16)/(x^2-2x-15))
I got an answe of zero, which seems very wrong.
Help me out?
Click here to see answer by solver91311(24713)

Question 777484: (9z^2d^4)^4
Click here to see answer by jim_thompson5910(35256)

Question 777571: What is 15 to the second power times 15 to a negative 5th power
Click here to see answer by solver91311(24713)

Question 777721: What is the value of this expression when x =4 and y= -3
x^3+y^2+x^2y^3- (x+y)
Click here to see answer by algebrahouse.com(1659)

Question 777761: what is the median in the set of numbers: 23456
Click here to see answer by rfer(16322)

Question 777762: what is mode?
Click here to see answer by rfer(16322)

Question 778458: Hello! I haven't done much algebra in 2 years now. I'm preparing for a test over the weekend and I don't quite remember how to simplify the following question:
(-3xy^2*z^0)^3
I am aware that z^0 = 1, which can be eliminated from the equation completely but after that I really don't know what to do.
I highly appreciate all answers! Your help is literally helping me pass through math class, and I will take all the help I can get!
Click here to see answer by Edwin McCravy(20054)

Question 778492: A 54 inch board is to be cut into three pieces so that the second piece is 3 times as long as the first piece and the third piece is 5 times as long as the first piece. If x represents the length of the first piece, find the lengths for all three pieces.
Click here to see answer by negative49(13)

Question 778521: I need to factor 125-x^3
would that be (5-x)^3?
Click here to see answer by jim_thompson5910(35256)

Question 779139: What is the factored form of 12x^4-20x^3+4x^2
Click here to see answer by tommyt3rd(5050)

Question 779139: What is the factored form of 12x^4-20x^3+4x^2
Click here to see answer by josgarithmetic(39613)

Question 779234: Write 68,190 in scientific notation.

Click here to see answer by stanbon(75887)

Question 779234: Write 68,190 in scientific notation.

Click here to see answer by josmiceli(19441)

Question 779264: My teacher says there is a smaller x-value and a larger x-value for this problem. However, the only x-value I come up with is 1, the larger x-value. How can there be two x-values? (x+7)^(4/3)=16
Click here to see answer by ankor@dixie-net.com(22740)

Question 779572: 33-15+8-2 Do I add 15+ 8 first then subtract

3 + 2^3 .3-4 what do I do first with this problem
Click here to see answer by josgarithmetic(39613)

Question 779618: x=3(1-e^-2y) i have to express y in terms of x, ive read through the related chapter on exponential equations and i am having trouble making sense of it as the examples font cover it, any help would be awesome, cheers
Click here to see answer by josmiceli(19441)

Question 780037: How is 2 to the fourth power and 4 to the second power equal? I need the answer by tonight
Click here to see answer by Alan3354(69443)

Question 780298: if a exponents problem looks like this how do you solve it.
(f-^5g^3)^2
Click here to see answer by solver91311(24713)

Question 780453: What is 8 to the 4th power equal
Click here to see answer by wilft1(217)

Question 780994: 2^x + 4^x = 30 what is the value of x? ( can be fraction or decimal) i also need the working please!
Click here to see answer by rothauserc(4718)

Question 781137: 3. Caso de factor com�n por agrupaci�n de t�rminos. Factorizar:
a. x�b2 � x2ya2 + x3a2 � x2b2y
b. 6x � 6y � by + bx
c. 8m3 � 2m2 � 2mn + 8m2n
d. 12xy � 4y2 � 6x + 2y

Click here to see answer by solver91311(24713)

Question 781150: Which expression is equivalent to (7^3)^(-2)

Click here to see answer by stanbon(75887)

Question 781649: how do i figure out 2z to the -8th power
Click here to see answer by tommyt3rd(5050)

Question 781857: -2(w+4)+9<-11
Click here to see answer by jim_thompson5910(35256)

Question 781209: 34. Writing The square of a number is the second power of the number. The cube of a number is the third power of the number. Explain why these names are reasonable.
Click here to see answer by tommyt3rd(5050)

Question 782325: i am not sure if this is the right category but here it goes. I am in grade 9 math and i need help showing how to solve these kinds of questions. Right off the bat i know the answer but i have to show my work obviously, so can you show me a similar question solved? Thanks!
P.S. Question is this: 3^6/3^x=3^2
Click here to see answer by ankor@dixie-net.com(22740)

Question 782873: 2X+2X=12
2X-1 =
Click here to see answer by oscargut(2103)

Question 783229: What is the value of 2x to the 2nd power minus z to the 2nd power?
Click here to see answer by josgarithmetic(39613)

Question 783251: What is the value of 5x to the 3rd power + 4y to the 3rd power where x=4 and y=3?
Click here to see answer by Cromlix(4381)

Question 784384: When solving for the product of -1^4. Would the answer be negative 1
Click here to see answer by waynest(281)

Question 784384: When solving for the product of -1^4. Would the answer be negative 1
Click here to see answer by MathTherapy(10549)

Question 784475: 8 to the seventh power over 8 to the fifth power
Click here to see answer by TueKe(1)

Question 784863: (4x^3)(5x^2)

Click here to see answer by sheldonbbtrocks(115)

Question 785198: how do you simplify -3 squared?

Click here to see answer by stanbon(75887)

Question 785477: Use the exponent rules to simplify FIRST, then evaluate
1) 7^8 x 7^-3 =
2) 4^2 x 4^-2 =
3) 8^4 �8^6 =
4) (5^-1)^-3 =
5) 12^10 x 12^-12 =
6) (2^-3)(2^-2) =
Click here to see answer by oscargut(2103)

Question 786086: Find the equation for an exponential function that passes through the pair of points given below.
Through:(−2, 5) and (3, 3)
F(X)=
Click here to see answer by xinxin(76)

Question 786551: 16^(3/2)
Click here to see answer by dfollett76(12)

Question 787087: xto the power of x is equal to hundred find x.
Click here to see answer by Cromlix(4381)

Question 787703: (532/53)1/3-1
note: 1/3-1 is the exponent
Click here to see answer by stanbon(75887)

Question 787740: 9 to the power of X squared plus 2 = 27 to the power of X + 3
Click here to see answer by solver91311(24713)

Question 787786: how to find 2^(5/2)without calculators
Click here to see answer by stanbon(75887)

Question 789541: how to multiply 20/12 X 9/15
Click here to see answer by waynest(281)

Question 790655: I need help on understanding what to do. On my homework there's this problem
Click here to see answer by rothauserc(4718)

Question 790655: I need help on understanding what to do. On my homework there's this problem
Click here to see answer by solver91311(24713)

Question 790657: how do you do the work for 5 to the third power-12�3

Click here to see answer by waynest(281)

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