Questions on Algebra: Negative and Fractional exponents answered by real tutors!

Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)

Question 47583: My problem is 2x^2+4/2x
I know it should be simple but I can not for the life of me get this one. I have to write it in the form of
quotient+remainder/divisor
Please help! And thank you in advance!
Click here to see answer by Nate(3500)

Question 47636: how do i simplify this equation and what is the answer?:
24a^2bc
_________
16ab^3c^2
Click here to see answer by Nate(3500)

Question 48334: I have this problem, and I have to simplify it and express in terms of positive exponents. (3x^-4y / z^2) All to the power of -3.
The answer I've come up with is x^12 / 27y^3z^6. I'm really not sure about this problem. Thanks.
Click here to see answer by Earlsdon(6287)

Question 48535: 1/8 - 3/5 = 1/x
Click here to see answer by cowess(34)

Question 48555: I'm taking an online class and the book does not give a very good explanation on how to do the following problem: Please help.
Factor, using the given factor. Assume all variables represent positive real numbers.
2k^-3 + k^-8 ; k^-8
Click here to see answer by josmiceli(9662)

Question 48554: I am taking a Pre-Calculus Algebra class online and I am at a complete loss. Please help!!
Perform the indicated operations. Write the result using only positive exponents and assume all variables represent nonzero real numbers.
9r^-3(r^4)^4/2(r^-2)^5
Rationalize the denominator. Assume all variables represent positve real numbers.
5√11x/√x^3
Your help would be greatly appreciated - like I said I am at a complete loss.
Thanks in advance!!
Click here to see answer by stanbon(57272)

Question 48534: 1/8 - 3/5 = 1/x
Click here to see answer by tutorcecilia(2152)

Question 48658: the instructions say: Solve each formula for the indicated variable
v=s2+1/2sh,for h

the number 2 is supposed to be s squared plus half
Click here to see answer by Earlsdon(6287)

Question 48674: Name the property that is illustrated by statement: 2a+(3b+c)=(3b+c)+2a.
Simplify (-14+8)-(4-11).
Graph the equation 2x-y+1.
Find the slope of the line containing points (-4,3)and2,-5).
Click here to see answer by stanbon(57272)

Question 48957: Hi! My calc teacher gave his students a packet of math review to do over the summer. I am stuck on this problem because it involves a trigonometric function. Please help me simplify this equation:
-[(x^-1/2)/(2)]sin(sqrt(X))
this is what i have so far:
step 1
-[(1/sqrt(X))/(2)]sin(sqrt(x))
step 2
-[{sqrt(x)/(x)}/{2)]sin(sqrt(x))
step 3
-[{sqrt(X)}/{2x}]sin(sqrt(x))<--I'm stuck here
Thank you for taking the time to look at this problem and any help would be greatly appreciated!!

Click here to see answer by venugopalramana(3286)

Question 48929: b-7 when b = 24
Click here to see answer by tutorcecilia(2152)

Question 49130: 4/5b=44/5
Click here to see answer by checkley71(8403)

Question 49241: how do you simplify 4x to the 5th power divided by 8x.
Click here to see answer by jake_6233(74)

Question 49956: i need help with a question on math! it is talking about negetives and exponents -15 (-15) (-15) (-15)
Click here to see answer by Earlsdon(6287)

Question 49981:
Click here to see answer by Niah(2)

Question 49983: Do I combine like terms? I am confused with these. Please help me.
Find each product:
a. 3y^2 (-7y^2 + 3y –6)
b. (3y –2 ) ( 4y^2 + 3y –5 )

Click here to see answer by tutorcecilia(2152)

Question 49984: Ugh!! I can not get the right answer for these....I am missing something. Can someone explain these to me?
Divide:

a. 40 X^8 Y^6 / 5 XY^3

b. X^3 –2X^2 –33X –7 / X –7

Click here to see answer by hulamc723(15)

Question 49958: i need help with (15) with a little 2
Click here to see answer by tutorcecilia(2152)

Question 50106: I think I got these two but would like to double check before turning in. Thanks!! Andrea
BTW, I apologize in advance for any misunderstanding in my notation as it is hard to do square roots and exponents in the same problem; it is much easier to read with the Math Type program.

(A)
2 sqrt x + 3(x + 1)^2-sqrt(4x) + x^2
2 sqrt x + 3(x^2 + 2x + 1) - sqrt(4x) + x^2
2 sqrt x + 3x^2 + 6x + 3) - sqrt(4x) + x^2
2 sqrt x - 2 sqrt x + 3x^2 + x^2 + 6x + 3
4x^2 + 6x + 3

(B)
sqrt(64x^5) / sqrt(121x^7)
8x^2(sqrt x) / 11x^2(sqrt x^3)
Click here to see answer by lkwtcnj(8)

Question 50353: Write how you could state the equivelant values in the metric system by using exponents such as 1 kilometer equal 10 to the _______________power.
Click here to see answer by stanbon(57272)

Question 50438: -x = 14
Click here to see answer by SnowXclouD(11)

Question 50467: Rewrite the expression with only whhole nuimber exponents and radicals. do not leave negative or fraction exponents.
2x^1/3
Click here to see answer by stanbon(57272)

Question 50569: x^-2+ (2x^-1)-35=0 can u help me solve this?
Click here to see answer by Nate(3500)

Question 50702: Simplify:
{(a+5)/a}*{a^2/(a^2-25)}
Thanks!
Matt
Click here to see answer by stanbon(57272)

Question 50704: Simplify:
(2*x^-3*y^-5)/(3*x^-6*y^-3)
Thank you so much for the help!!
Click here to see answer by stanbon(57272)

Question 50725: (80^1/2)/(16^1/2)
Click here to see answer by stanbon(57272)

Question 50709:
Thanks a lot,
Matt
Click here to see answer by darq(90)

Question 50904: 4 t2= The 2 is squared... so 4t 2=16?
Click here to see answer by stanbon(57272)

Question 50904: 4 t2= The 2 is squared... so 4t 2=16?
Click here to see answer by sinadone(8)

Question 51367: Hi Could you please help me with this problem.... -x=-4.25
Click here to see answer by stanbon(57272)

Question 51368: Hi Could you please help me with this problem....
-5x+9=39

Click here to see answer by checkley71(8403)

Question 51873: Graph y= 3x +5. Determine the slope of the line and its y intercept
Click here to see answer by rchill(405)

Question 51984: i need help on this :
-3[-1-2(-1-1)][-3(-2)-1]
can you show me step by step please.
Click here to see answer by checkley71(8403)

Question 52191: Fast food---if 4 out of 5 doctors perfer fast food then at a convention of 445 doctors--how many had fast food?
Click here to see answer by Nate(3500)

Question 52185: 4c-3(5c-2x+2)
Click here to see answer by rchill(405)

Question 52353: I am having trouble figuring this out. the problem is simple really there is just one little turn I can't figure out. a=40 and b=5 so here goes it is written in fraction form ans the first is -a/b, and 2nd is a/-b simple right now how do you figure the problem when the negative sign is right next to the fraction bar instead of next to the variable itself.

Click here to see answer by Earlsdon(6287)

Question 52510: im havig trouble understanding how to do this problem , could you show me how to do this?
-1/2 -3/2
(x+5) - (x+5)
Click here to see answer by stanbon(57272)

Question 52961: Give an exmple in which a rational number raised to a rational power is irrational.
Click here to see answer by funmath(2925)

Question 52959: Rewrite each expression in two ways: (a) using rational exponents; (b) using only one radical sign.
The cube root of 2 times the fifth root of 2.
Click here to see answer by funmath(2925)

Question 52957: Can you please explain to me how to do the problem -4.601 - (-5.09)= I came up with -9.691. That wasn't right. Thanks
Click here to see answer by funmath(2925)

Question 52956: Can you please explain to me how to solve 35 Divided by -7a= I came up with the answer -5a but my teacher said that wasn't right.
Thanks
Click here to see answer by funmath(2925)

Question 53233: I do not understand the process I am told k=2 but how did that come to be?
when I try to use other sites, the computer tells me variables can not be used as an exponent Thank you -Comicruler
solve for k
x^k-12=(x^2)^-k-3

Click here to see answer by venugopalramana(3286)

Question 53752: Ive been stuck on this problem for almost 2 weeks now. I just cannot seem to find an example related enough to convince me that I am doing this correctly. Can you please help me? The problem is:
(x^2y^-3z)^1/2 / x^1/2yz^-1/2
The answer Ive come to is
x1/y^3/2z^1/2 / x^1/2y1/z^2
am I even close??
Click here to see answer by Earlsdon(6287)

Question 53952: 3 over x-1 minus 1 over 2x+1 = 1
solve this

Click here to see answer by adav8266(2)

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