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

Tutors Answer Your Questions about Exponents (FREE)

Question 127961: Add And Subtract Terms:
6.3X + 1.2Y- 3.2X+5.4 + 4.3Y
Click here to see answer by crzyy321(5)

Question 128123: ab^-8
______
c^5
Click here to see answer by edjones(7569)

Question 127966: Evaluate 6-(2+3) + (4-2)
Click here to see answer by idkweirdo(15)

Question 128106: Add And Subtract Terms
3/4A + 2/3B - 1/2B + 1/2A
Click here to see answer by apachemexican1(64)

Question 119831: A car uses 10 gallons of gasoline on a trip of 370 miles. At that rate, how much gasoline will a trip of 518 miles require?
Click here to see answer by apachemexican1(64)

Question 112853: Multiply.
(2r-3s)(4r squared +6rs + 9s squared)
Please help!
Click here to see answer by apachemexican1(64)

Question 128879: x2 ((squared)) + 7x+10 = 0
Click here to see answer by solver91311(16885)

Question 128808: Simplify: -3x^0 + (1/2)^-2 - (-2)^3
Click here to see answer by crzyy321(5)

Question 128950:

16mn^-5 9^4*9^6
Ialways get mixed up on these!
Click here to see answer by checkley71(8403)

Question 129007: Tom’s uncle owns a triangular piece of land. The perimeter fence that surrounds the land measures 378 yards. The shortest side is 30 yards longer than one-half of the longest side. The second longest side is 2 yards shorter than the longest side. What is the length of each side?
What does this problem mean? I tried and I don't understand it. Please help me
Click here to see answer by checkley71(8403)

Question 129162:
If P = 7y + 2xy - 6x and Q = 5 - 7y, find the value of 3P - 4Q. Please help I am very confused on this one. Please Help Me
Click here to see answer by checkley71(8403)

Question 129166:

Divide 3x2y + 6xy2 by xy.

Click here to see answer by checkley71(8403)

Question 129161: In an auditorium there are 4a rows, and each row can accommodate 5yz benches. If x students can be accommodated in each bench, then how many students can sit in the auditorium?
Please help me with this problem I have tried and don't understand it. Please Help Me
Click here to see answer by edjones(7569)

Question 129334: Find the exact value of (111, 111, 111)^2
Click here to see answer by checkley71(8403)

Question 129621: Factor: (4w^2-u^2)
Click here to see answer by Earlsdon(6287)

Question 129696: please help me solve this equation:(6x^2/24x^4)^2
Click here to see answer by checkley71(8403)

Question 130034: (-27)^n = 9
I am having a hard time understanding how to solve problems like this that have a negative interger and an exponent. I am also having problems with exponents that are fractions. The section in my book is called Rational Exponents.
Any help would be greatly appriciated.
Click here to see answer by Earlsdon(6287)

Question 130541: (3x+2)exponent4

Click here to see answer by checkley71(8403)

Question 130502: (-y^-4)^2 / 6(y^-5)^-1
simplify expression with positive exponents only
Click here to see answer by cngriffith(27)

Question 130614: Im really confused could someone please help?
Solve by factoring:
7a2+9a+2=0
Click here to see answer by jim_thompson5910(28595)

Question 130657: ok this is grade 10s math pure exponents how do u solve this problem?
(M to the power of 5)*(M to the power of 4)3
Click here to see answer by Earlsdon(6287)

Question 130793: does anybody know what a "multiplicative inverse" is????
PLZZZZZZZZZZZZZZ help i've looked everywhere!!!!
Click here to see answer by cngriffith(27)

Question 130939: (5x + 2x - 7x – 3) – (6x + 3x – 11)
125x + 4x – 7x – 3 – 36x + 3x – 11
(125x + 4x – 7x – 36x + 3x) – 3 - -11
(125x + 4x + 3x – 43x) – 3 + 11
89x + 8
Do I have the right answer?
Click here to see answer by cngriffith(27)

Question 130940: (5x + 2x - 7x – 3) – (6x + 3x – 11)
125x + 4x – 7x – 3 – 36x + 3x – 11
(125x + 4x – 7x – 36x + 3x) – 3 - -11
(125x + 4x + 3x – 43x) – 3 + 11
89x + 8
NOTE: ORIGINAL EQUATION HAD EXPONENTS IN IT:
(5x^3 + 2x^2 - 7x - 3) - (6x^2 + 3x - 11)
Click here to see answer by checkley71(8403)

Question 130572: -7 squared = 294 or -294
Click here to see answer by cngriffith(27)

Question 131150: Can you please tell me if this is figured right?
Simplify: ( x/x^2 – 9 ) – ( x/x^2 + 2x – 15 )
(1 - 9) - (3x - 15)
-8 - - 12
-8 + 12
= 4
Click here to see answer by edjones(7569)

Question 131426: I don't understand this! Help!!
(-9x^3)^2(-1/9x^6)
the slash meaning a fraction
thanks!
Click here to see answer by josmiceli(9676)

Question 131426: I don't understand this! Help!!
(-9x^3)^2(-1/9x^6)
the slash meaning a fraction
thanks!
Click here to see answer by 067isa(13)

Question 131542: express using a positive exponent 1/h^-6
Click here to see answer by checkley71(8403)

Question 132129: -a-n an-1 a1(-a)-n
____________ Simplify. N is an even number
a-n
I couldnt do exponents in this format so the problem reads negative a to the negative n, times a to the n minus 1, times a to the 1, times negative a to the negative n, over a to the negative n.
Click here to see answer by rapaljer(4667)

Question 131928:
(7x^2-x-4)-(9x^2-10x+8)+(12x^2+4x-6)
Click here to see answer by checkley71(8403)

Question 132569: solve
3x to the 2nd power + 17 = 33 + 7x 2nd power
Click here to see answer by stanbon(57342)

Question 132706: 1. solution of x2y5y-2x-2
2. solution of p0x-1(x-2x0)
3. solution of m5b2mb-2
4. solution of 4x2p0(3xp5-2x-2)
and how you arrive at the solutions thank you
Click here to see answer by stanbon(57342)

Question 132955: 27^3x=9^4x-2
Click here to see answer by Nate(3500)

Question 132832:

What is the simplified form of:(3x^3y^2)^4(2y)^-3
Answer choices:
A) 3/2x^12y^5
B) 3/2x^7y^3
C) 81/8x^12y^5
D) 81/8x^7y^3

Click here to see answer by checkley71(8403)

Question 133179: I am stuck on a problem, would you please be able to assist me. Thank you.
I am asked to simplify the following, expressing your answer with positive indices.
The problem is as follows:
(2x^3y^-2/-3x^5y^-4)^2.
This would really be appreciated. Thank you so very much.
Cheers D
Click here to see answer by vleith(2825)

Question 133297: Hi all
I have a couple of easy ones for you, but I need to know if I have got them correct for my methodology. Would you please be so kind and have a look at these for me. Thank you.
I am asked to simplify the following:
Q1/ x-x^-1 and also Q2/ (x+x^-1)^-1
I have
Q1/ x-1/x and also Q2/ 1/(x+1/x)
Am I on the right track?
Thank you so very much.
Cheers D
Click here to see answer by vleith(2825)

Question 133229: 204800=50*2^3/D
Note that 3/D is the exponent
Click here to see answer by scott8148(6628)

Question 133616: (h-2)exponent2+(h+1)exponent2=9
Click here to see answer by vleith(2825)

Question 133631: Hello, I appreciate everyone help these last couple days as I get ready to take a math assessment. I haven't done this stuff in years! I just discovered this site :) wish I had known about it a long time ago lol. Okay here is probably my last question till I get assessed...can someone please explain how to solve this and the rules behind this radical expression. Given: x and y are greater than zero. Here it is the square root of x divided by 3 times the square root of x minus the square root of y. Does that make sense?
Click here to see answer by jim_thompson5910(28595)

Question 133822: Simplifying Expressions:
Simplify, if possible. Write your answers as a power or as a product of powers.

5^3 x (5a^4)^2

The answer I got was 5^5a^8
I don't think that I'm doing it right though.
Could you please explain the steps I should be taking?
Click here to see answer by Earlsdon(6287)

Question 133805: Simplifying Expressions:
Simplify, if possible. Write your answer as a power or as a product of powers.

(-2xy)^3 (-x^2)

I'm getting confused on how far to go, and do you combine both of the problems in the quotations?
Or Is the 2x^3y^3-x^2 that I got as an anwer correct, or even close to the right direction?
Click here to see answer by checkley71(8403)

Question 134371: Question: 0.6=0.88^x
How do I find x and can it be done on a calculator?
I found the answer by 0.6 divided by 0.88 and counted the number of reps till I got the answer 1 (or close to), but there must be a better way.
Click here to see answer by stanbon(57342)

Question 134381: Find the smallest whole number that when divided by 5,7,9, and 11, respectively, gives remainders of 1,2,3, and 4.
Click here to see answer by vleith(2825)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455