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

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

Question 194579: When working with exponents, is there any difference in operations if the exponents are whole numbers or fractions? In what sense do exponents and radicals behave exactly the same way? Provide examples
Click here to see answer by stanbon(75887)

Question 195424: what is the answer to- x^1/3-2/5=0?
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Question 195530: Can you show me step by step how to solve this?
8^-5*8^7
________
8^2

Click here to see answer by jim_thompson5910(35256)

Question 196379: can you please help me determine how many x-intercepts the parabola has and weather its vertex liesabove or below or on the x-axis?(((y=x^2-5x+6)))
Click here to see answer by checkley77(12844)

Question 196382: can you please help me solve by completing the square(((x^2-6x=16)))
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Question 196381: can you please help me determine how many x-intercepts the parabola has and weather its vertex liesabove or below or on the x-axis?(((y=-x^2+2x-1)))
Click here to see answer by checkley77(12844)

Question 196377: Please help me answer: (((In the equation ax^2+bx+c=0, the value of b^2-4ac is called the discriminant of the quadratic equation. What does the value tell you about the real roots of the equation?)))
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Question 196373: Can you please help me solve the following by using the quadratic formula and leave irrational roots in the simplest radical form:2x^2-3x+1=0)))
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Question 196370: Can you please help me solve and leave in simplest radical form the following: (((x^2+8x= -16)))
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Question 196843: please help me solve (-3x^2-x-7) - (x^2+4x-9)
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Question 196843: please help me solve (-3x^2-x-7) - (x^2+4x-9)
Click here to see answer by Mathtut(3670)

Question 197952: Write the simplified form of
7^a+2 - 8(7^a+1) + 5(7^a) + 49(7^a-2)
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Question 197968: can you please help me complete the square of: ((( x^2+12x+_____ )))
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Question 197969: can you please help me complete the square of: ((( x^2-6x+____ )))
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Question 197970: can you please help me solve by completing the square of ((( 2x^2-3x+1=0 )))
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Question 197971: can you please help me solve by completing the square ((( x^2-x-1=0 )))
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Question 198265: can you please help me complete the square of ((( x^2-6x+___ )))

is the answer.
Click here to see answer by mathsteacher(28)

Question 198264: can you please help me solve by completing the square of ((( x^2-x-1=0 )))
Click here to see answer by josmiceli(19441)

Question 198266: can you please help me determine how many x-intercepts the parabola has and wether its vertex lies above or below or on the x-axis ((( y=x^2-5x+6 )))
------(1)
x intercept ==> y=0. So put y=0 in (1)
==>
==>
==> x={2,3}
So the parabola have two x intercepts.
Since the sign of x^2 is positive, the parabola has a minimum at its vertex.
Vertex is [-b/2a,f(-b/2a)]= (5/2,-1/4) So the vertex lies below the x axis.
Click here to see answer by mathsteacher(28)

Question 198267: can you please help me slove and leave in simplest radical form((( x^2+8x=16 )))
Click here to see answer by josmiceli(19441)

Question 198268: can you please help me answer ((( x varies directly as the square of s and iversely as t. How does x change when s is doubled? When both s and t are doubled? )))
Click here to see answer by Alan3354(69443)

Question 198377: How do I solve this equation
Click here to see answer by jim_thompson5910(35256)

Question 197948: Simplify:
(x^2y^3z^-2)^-3 (x^-3yz^3)^-1/2
_______________________________
(xyz^-3)^-5/2
Click here to see answer by arallie(162)

Question 198378: How would you simplify (1+(1/x))/(1-(1/x^2))?
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Question 198378: How would you simplify (1+(1/x))/(1-(1/x^2))?
Click here to see answer by arallie(162)

Question 198559: (1/9) ^ (-3/2)
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Question 198531: Simplify the expression: (14B^2-7B/12B^3+24B^2) / (2B-1/B^2+2B)
Click here to see answer by arallie(162)

Question 198583: if g(x)=3x squared-4x+1
What is the value of g(-2)?
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Question 198590: 16x^5y^-8/x^7y^4*(x^3y^2/8xy)^4
PLEASE HELP ME ASAP I HAVE A FINAL ON THIS TOMORROW AND IM SO CONFUSED AND MY TEACHER IS HELPLESS. PLEASE IM BEGGING!!
Click here to see answer by arallie(162)

Question 198756: Can you please help me simplify and please i really need help i have a test tomarrow and i still don't understand this stuff.
Click here to see answer by jim_thompson5910(35256)

Question 198535: Reduce the given complex fraction into simple fraction. (a-2/a+2) + (a-2) / (a) - (3a+12/a+2)
Click here to see answer by Edwin McCravy(20060)

Question 199304: hi, i had a question about negative exponents, how would i solve 1.6 multiplied by 10 to the negative 19.
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Question 199304: hi, i had a question about negative exponents, how would i solve 1.6 multiplied by 10 to the negative 19.
Click here to see answer by stanbon(75887)

Question 199318: i need help for me to pass my course i need to find the answers to these
remove brackets and collect like terms for the following expressions
A) 5(2a-b)
B) (3x+2)-(4x-Y)
C) 3x(x+3)+x squared
D) (x+y)(x-2y)

Click here to see answer by stanbon(75887)

Question 199511: Simplify the product: (3cd^6)^2(cd)^5
[A]3c^3d^17 [B]3c^7d^17 [C]9c^7d^11 [D]9c^7d^17
Click here to see answer by rfer(16322)

Question 200924: The following function computes the cost, C (in millions of dollars), of implementing a city recycling project when x percent of the citizens participate. C(X)=1.4x/100-x
a)Using the model, find the cost if 60% of the citizens participate.
b)Using the model, determine the percentage of participation that can be expected if $4 million is spent on this recycling project. Set up an equation and solve algebraically. Round to the nearest whole percent.

Click here to see answer by josmiceli(19441)

Question 201778: On a practice test that I took it said that the equation of
A^-3 B^1/3 A^3/4 B^3 = B^10/9
-------
A^ 9/4
I want to know how that is the correct answer
Click here to see answer by edjones(8007)

Question 202571: -3b - 6 + 7b =6 what does B = ?
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Question 202827: Solve. (2x^2+3x-1)^2/3=4
Click here to see answer by stanbon(75887)

Question 204150: Please assist me by Simplifying without negative exponents: [xy^5/x^-4y^2]^-2
Click here to see answer by Alan3354(69443)

Question 204535: x^(-2)=16
Click here to see answer by nerdybill(7384)

Question 204533:
Click here to see answer by alicealc(293)

Question 205091: how to solve this 8.7x 10 to the negative 4th power
Click here to see answer by checkley77(12844)

Question 205311: -3t - 5= 6 + 7t
A)4
B)10/11
C)-10/11
D)-11/10
Click here to see answer by stanbon(75887)

Question 205465: 2/3p = 8/9
Click here to see answer by checkley77(12844)

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