Tutors Answer Your Questions about Exponents-negative-and-fractional (FREE)
Question 419288: Please, help me solve this equation step by step so I can understand it. I have tried to simplify the 1/2 exponent on the left side to get rid of it, but it made the right side more complicated... I am confused on how to approach this equation. thanks!
(x-2)^1/2=11*(x-2)^1/4-18
Click here to see answer by jsmallt9(3758)  |
Question 421895: I can't quite understand where I am going wrong.
-32a^-15b^10/-52a^13b^-14
I had answered it as 8b^4/13a^2
Wouldn't you change the places of the original exponents to make them positive and then subtract since you are dividing? The correct answer is 8b^24/13a^28. I cannot seem to grasp this idea of the negative exponents. I know you have to change the places to make them psoitive and that is what I had done. But it was marked wrong. This is the topic that is holding me back.
Thank You
Click here to see answer by ewatrrr(24785)  |
Question 421895: I can't quite understand where I am going wrong.
-32a^-15b^10/-52a^13b^-14
I had answered it as 8b^4/13a^2
Wouldn't you change the places of the original exponents to make them positive and then subtract since you are dividing? The correct answer is 8b^24/13a^28. I cannot seem to grasp this idea of the negative exponents. I know you have to change the places to make them psoitive and that is what I had done. But it was marked wrong. This is the topic that is holding me back.
Thank You
Click here to see answer by Theo(13342)  |
Question 427789: I am working on exponents and have a couple of questions.
1) Solve -r^-2 if r=-3
I know the answer is -1/9 but I don't understand why it is a negative. I thought the negative symbol in the problem and the negative symbol on the 3 would cancel each other out and make it a positive.
2) What is the difference between the following three probs. I am just not understanding what to do about the - sign and when to do it!
-5^-3
(-5)^-3
-(5)^3
I was not sure how to show the exponents and someone told me to use the ^ symbol so I did. Hope it makes sense. I am stuck!!
Thank you.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 430343: Multiply ((x^(2)z^(2)~(x)+y^(7)))/(x^(5)z^(2)) by (x^(9)z^(9))/(y^(2)) to get (x^(4)z^(7)(x^(2)z^(2)~(x)+y^(7)))/(y^(2)).
((x^(4)z^(7)(x^(2)z^(2)~(x)+y^(7)))/(y^(2)))
Remove the parentheses around the expression (x^(4)z^(7)(x^(2)z^(2)~(x)+y^(7)))/(y^(2)).
(x^(4)z^(7)(x^(2)z^(2)~(x)+y^(7)))/(y^(2))
- I don't how this part works: Multiply ((x^(2)z^(2)~(x)+y^(7)))/(x^(5)z^(2)) by (x^(9)z^(9))/(y^(2)) to get (x^(4)z^(7)(x^(2)z^(2)~(x)+y^(7)))/(y^(2)).
How do you get x^4z^7? Wouldn't you get x^11z^11????? HELP!
Click here to see answer by richard1234(7193)  |
Question 430356: Can someone confirm if I am doing this problem right? I have to provide the answer in fraction in lowest terms.
Question: 2/(x-1) - 4/(x-1)
My solution = 2(x-1)/(x-1)(x+1)- 4(x+1)/(x-1)(x+1)
= -2x-6/(x+1)(x-1)
Thanks
Click here to see answer by stanbon(75887) |
Question 430356: Can someone confirm if I am doing this problem right? I have to provide the answer in fraction in lowest terms.
Question: 2/(x-1) - 4/(x-1)
My solution = 2(x-1)/(x-1)(x+1)- 4(x+1)/(x-1)(x+1)
= -2x-6/(x+1)(x-1)
Thanks
Click here to see answer by Alan3354(69443)  |
Question 433674: I am pretty sure I have this under control but I would like to verify my answers.
(m^-3n^4)^-4
I got m^12/n^16 If this is not correct, please show me how.
(4x^4)3(2xy^3)2
I got 256x^16y^3 yes?
one more
This is to be done in scientific notation.
10^-9x(2x10^2)^2 x is being used to mean "times"
I got 4x10^-5 somewhat more sketchy on this one!!
Thanks so much
Click here to see answer by rwm(914) |
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