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

Tutors Answer Your Questions about Exponents (FREE)

Question 770783: (10)to the second power =?
Click here to see answer by MathLover1(20849)

Question 771364: 1/8=(3x-8)^(-3/2)
Click here to see answer by oscargut(2103)

Question 751910: 3^x=1/9
Solve for x
Click here to see answer by tommyt3rd(5050)

Question 753212: Explain why (10a)^2 is not in simplest form
Click here to see answer by tommyt3rd(5050)

Question 757386: 27^-2/3/27^-1/3
Click here to see answer by tommyt3rd(5050)

Question 754002: 8x^3(-4x^2+6x-7)=
Click here to see answer by tommyt3rd(5050)

Question 771675: Find the value of x in:
9^x+2=240+9^x
Click here to see answer by tommyt3rd(5050)

Question 771715: what is the factors of x�-y�+2y-1
Click here to see answer by Edwin McCravy(20054)

Question 772021: I need help solving (-4p^2 � 3p � 2) + (-p^2 � 4)
Click here to see answer by tommyt3rd(5050)

Question 772069: I need to Simplify. I have only done half of it
2^x * 4^x-1=
(2^2)^x-1
2^2x-2
Click here to see answer by John10(297)

Question 772071: answer is 2^3x-2 i have a problem coming to that conclusion, using x^n * x^m = x^(n + m)
2^x * 4^x-1 = 2^3x-2
Click here to see answer by John10(297)

Question 772196: 2x^-3/6x^-3 i have to simplify. i have used a^b/a^c=a^b-c.. but i cant get the answer x/3
i tried reducing the fraction x^-3/3x^-4 but know where to go from there
Click here to see answer by Edwin McCravy(20054)

Question 772367: please help
2(4x y^2)^-1 (-2x^-1 y)^2 the answer is 2/x^3
I used a^-b=1/a^b for one side
2(4xy^2)^-1
1/4xy^2= 2(1/4xy^2)= 2/4xy^2
Click here to see answer by josgarithmetic(39613)

Question 772452: how do you work out
451^2 -449^2
I know that i should be using the formula of the difference of two squares, but i am unsure of how to do it.
Click here to see answer by cher781(8)

Question 772479: Topic:factors and multiples
Qn) when 2power256 is divided by 17 the remainder would be?{how to know remAinders and last digits....please help}
Click here to see answer by josgarithmetic(39613)

Question 772549: m + 4m =

Click here to see answer by oscargut(2103)

Question 772565: I would like to know how to solve/ 4x^5-7x^2-8x^3-4/2x^3.
Click here to see answer by solver91311(24713)

Question 773028: (1/2) to the whole power 3/2
Click here to see answer by tommyt3rd(5050)

Question 773427: simplify 6(-99)=

Click here to see answer by jim_thompson5910(35256)

Question 773415: derive (a+b+c)^2
Click here to see answer by tommyt3rd(5050)

Question 773701: 2 ^ (x + 4) - 2 ^ (x + 2) = 3
Click here to see answer by Alan3354(69443)

Question 773909: I am trying to convert 2^X=Y (2 to the X power)so that X is on one side of the equation. Even if we know what Y is, I cant for the life of me figure out how to get the unknown rational decimal exponent on one side of the equation.
I am trying to make a formula for my spreadsheet that will take in the number of lottery tickets I buy (Y) and figure out to what the exact odds are that I would win.
Example: Odds with 1 ticket are 1:1,000,000, so 2 tickets are 1:500,000, 4 tickets are 1:250,000 and 8 tickets are 1:125,000 and so on.
I am trying to figure out a formula so I can enter in 40 tickets and the formula gives me the 2^X power value and then I use that X value to manipulate the odds to see what the odds are for said Y tickets.
Am barking up the wrong tree with decimal exponents? Should I be looking in Statistics or something? please help me get in the right direction. Thank you.
Patrick Barry
Click here to see answer by jim_thompson5910(35256)

Question 774065: Evaluate the expression when n=8 and n=.3
Click here to see answer by oscargut(2103)

Question 774494: Simplify by removing factors of 1:
(r^2 - 9) / r^2 - 6r + 9
I've tried factoring it, but what does factors of 1 mean? And how do you go about doing that?
Click here to see answer by ankor@dixie-net.com(22740)

Question 774548: Divide and simplify if possible:
((2x+4) / (5x-20)) / ((x+2)^2 / (x-4)^2 )
I've gotten this far:
(x^3+10x^2+32x+64) / (x^3-16x-20)
Am I headed in the right direction? Please help!
Click here to see answer by josgarithmetic(39613)

Question 774905: 14 to the 6th power multiplied by 14 to the 8th power
Click here to see answer by dkppathak(439)

Question 774913: what is 2 divided by x to the fourth?
Click here to see answer by tommyt3rd(5050)

Question 774963: what is the technique for solving 7 raised to the power 105
Click here to see answer by pakhi(24)

Question 775074: A man is standing over a beach and throws a rock up in the air from a height of 192ft. the initial velocity is 64 ft. per second. The rock height=h above the beach, in feet, after t seconds is given by the function
h(t)= -16t+64t+192
the -16t has an exponant of 2 but i could not figure out how to do it with my computer.
a) how high above the ground is the rock after 2 seconds?
b) How long will it take for the rock to raech the ground. o ft.?

Click here to see answer by ankor@dixie-net.com(22740)

Question 775239: You can fine
d the distance in feet that an object falls in t seconds using the expression 16tsquared. If you drop a ball from a tall building, how far does the ball fall?
Click here to see answer by josmiceli(19441)

Question 775234: how do you solve 8squared - 4 divided by 72?

Click here to see answer by rfer(16322)

Question 775469: What is the answer of -5 to the 4th power? What is the formula? My answer is -625
Click here to see answer by Edwin McCravy(20054)

Question 775479: can you show me the answer and how to solve this5x5x5x6x6x8
Click here to see answer by sofiyac(983)

Question 776110: Here is my math problem:
An iceberg has a volume of 27 cubic meters. The volume under the water is 9 times the volume above the water. How much of its ice is below the surface? After solving, write the solution using powers.
Click here to see answer by rothauserc(4718)

Question 776157: How else can you write 2 to the 9th power without having to multiply 9 two's.
Click here to see answer by stanbon(75887)

Question 776496: how do you solve 12^9 over 12^2
how do you solve (6^2)^4 in simplest form
Click here to see answer by josmiceli(19441)

Question 776532: What is the value of i squared, i cubed, i to the 4-8 power? If i is an imaginary number. Generalize the pattern that you see.
Click here to see answer by Alan3354(69443)

Question 776544: 4 /12 in words
Click here to see answer by sofiyac(983)

Question 777007: I have determined the relationship of my table to be exponential however I am having a problem remembering how to write a rule to match. My x is 4 and my y is 2 then the rest of my table has a varible rate of change for y and constant for x.
can you please assist me with a remnder of how to start on this as I have been out of school for a while.
Thank you,
Sherrie
Click here to see answer by solver91311(24713)

Question 776973: 2^(5-2)-2^(3/2)
The answer is 2^(3/2)
But I'd like step by step word and number explanations of what is being done and why to finish this problem. Please Help!!
Click here to see answer by rothauserc(4718)

Question 777066: X^3=64 solve for x
Click here to see answer by oscargut(2103)

Question 777297: 7^5-7^3
Click here to see answer by sofiyac(983)

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