Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

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Question 390035: need to factor 64x2-y2. not sure where to start

Click here to see answer by nerdybill(6962)

Question 390162: is this correct or incorrect
-2(a-3)=6
-2a-6=6
please solve and show work.
5-3(2b-3)=-4
please write a formula.
find three consecutive numbers whose sum is 72.
thanks for your help.
Click here to see answer by jim_thompson5910(28598)

Question 390166: pleasen help writen a formula.
In order to have an average of 85, maia must earn at least a 76 and no more than a 95 on her final exam. if M represents the final grade, write a compound inequality representing the grades needed for an 85 average.

my answer was 76/95 is this correct?
Click here to see answer by richard1234(5390)

Question 390164: is my formula correct?
the volume of a spere is equal to four-thirds the radius(r) cubed multiplied by pi. my answer is v=4/3 pi r^2. is this correct?
please solve for x.
x/4 + 10 > 2
thank you.
Click here to see answer by mananth(12270)

Question 390173: if m<3 is 40 degrees then m<5=
if m<3 is 40 degrees then m<2=
Click here to see answer by richard1234(5390)

Question 390172: if a is an integer, write three consecutive integers beginning with a-10.

Click here to see answer by richard1234(5390)

Question 390170: Moe, Frank, and eddie are planning a fishing trip to keene's lake in the pocono mountains. moe is bringing $200 more than frank and eddie is bringing $100 less than frank. what is the greatest amount of money each should bring if they want to have at least $1600? please use the 5-step.
Click here to see answer by mananth(12270)

Question 390174: find two consective odd integers whose sum is 141. use the 5 step method.
Click here to see answer by richard1234(5390)

Question 390168: -6x>18
x< -3
please solve for x

|x+4|>6
Click here to see answer by Earlsdon(6287)

Question 390177: find the measure of each angle of a triangle if the second angle is twice as large as the first angle and the third angle is three times as large as the first angle.
Click here to see answer by rfer(12666)

Question 390142: what are the steps to solving the equation 3x/x^2+2x-8=1/x-2+x/x+4
Click here to see answer by solver91311(16897)

Question 390230: How would this problem be written as an equation:
Smith and Jones combined age is 91. Smith is twice as old as Jones was when Smith was as old as Jones is now.
I solved the question but do not know how to write the equation!
Thanks in advance
Lou
Click here to see answer by J2R2R(94)

Question 390249: how will math help in the professional or personal life?
Click here to see answer by MathLover1(6634)

Question 390320: Write a polynomial function with rational coeffecients so that P(x)=0 has the given roots.
-5 and 3i
Click here to see answer by stanbon(57377)

Question 390322: Write a polynomial function with rational coeffecients so that P(x)=0 has the given roots.
i and 5i
Click here to see answer by richard1234(5390)

Question 390360: (3x)/(x^2+2x-8)=(1/(x-2))+(x/(x+4))
Click here to see answer by stanbon(57377)

Question 390473: THE GRAPH OF WHICH EQUATION IS A STRAIGHT LINE PARELLEL TO THE GRAPH OF Y=2X.
A 4X-Y =4
B 2X-2Y = 2
C 2X -Y =4
D 2X +Y =2
E X-2Y =4
PLEASE EXPLAIN.
Click here to see answer by robertb(4012)

Question 390481: factor
x^5 - 1
Click here to see answer by edjones(7569)

Question 390481: factor
x^5 - 1
Click here to see answer by richard1234(5390)

Question 390498: What is the degree of a^2b^3 - a^3b^4 +2ab
Click here to see answer by robertb(4012)

Question 390525: 1.) 8-2x / 5x+10 = blank / 5y(x+2)
2.) 3x^2+10x+3 / x-1 = x(x+3)(x+5)(3x+1) / blank

What is in the blank? Thank you.
Click here to see answer by ewatrrr(10682)

Question 390550: solve: 2/x+1 + 3/x-1 = 5/x^2-1
Click here to see answer by stanbon(57377)

Question 390577: simplify 6 square root of 256, 3 square root of 225 and 9 square root of 324
Click here to see answer by ewatrrr(10682)

Question 390385: Adding Rational Expressions
Please walk me thru each step, but especially involving the LCD:
Add:

Click here to see answer by Edwin McCravy(8909)

Question 390766: Cant understand how to get axis of symmetry for:
y=x^2-5x-6
and
y=x^2-6x-7
Click here to see answer by Alan3354(30993)

Question 390785: Make up a polynomial that meets the following conditions:
a)it has rational zeros 3/4 and -1/3
b)it has two complex roots of the form a+bi,a,b "not equal" to 0
Then, create the list of all possible rational roots and use synthetic division to reduce the 4th degree polynomial to a quadratic and solve for the remaining roots. Show all steps.
Click here to see answer by richard1234(5390)

Question 390820: 2x + 4 / 3 = 20 What is the value of x
Click here to see answer by rfer(12666)

Question 391017: (ab)^3
Click here to see answer by stanbon(57377)

Question 391019: Am I correct with this answer: (x+2)(x+3)=x^2+6
Click here to see answer by rfer(12666)

Question 391020: Am I correct with this: (2x-5)(3x-2)= 5x-7
Click here to see answer by rfer(12666)

Question 391020: Am I correct with this: (2x-5)(3x-2)= 5x-7
Click here to see answer by ewatrrr(10682)

Question 391018: I need to simplify: (2x+5)(x^2-x-2)
Click here to see answer by rfer(12666)

Question 390983: (x-3y)(-x-5y-1)
Click here to see answer by rfer(12666)

Question 391022: In the expression x^n, n is called the ------, x is called the __________
Click here to see answer by Alan3354(30993)

Question 391058: Factor: -9n3+6n2
Click here to see answer by Edwin McCravy(8909)

Question 391071: what is the area of this triangle? it has a base of 6x^2y and a height of 3x^4y^2 . this is in algebra 1 .
Click here to see answer by solver91311(16897)

Question 391071: what is the area of this triangle? it has a base of 6x^2y and a height of 3x^4y^2 . this is in algebra 1 .
Click here to see answer by checkley79(3050)

Question 391086: Use the steps below to solve the following problem. Three brothers have ages that are consecutive multiples of five. The sum of their ages two years ago was 69. Find their ages.
Steps:
a. Let the youngest brother's age be "n". Write an expression for the age of each of the other brothers.
b. Use your answer from (a) to write an expression for the age of each of the brotherss two years ago.
c. Use your answer from (b) to write an expression for the sum of the brother's ages two years ago. Simplify the expression.
d. For what value of "n" will the expression from (c) equal 69?
e. Use the value of "n" you found in part (d) to find the age od each of the brothers now.
f. Check: First check that each age you found from (e) is a multiple of five. Then find the ages of the two brothers two years ago. Check that the sum is 69.
Click here to see answer by solver91311(16897)

Question 391139: For Algebra does it go Y-Y divided by X-X or X-X divided by Y-Y?
Click here to see answer by mananth(12270)

Question 391184: The question says: Factor completely
10a^2 - 15ab^2 How do you solve?

Click here to see answer by haileytucki(390)

Question 391185: 2(x-3y)^2 + 4x(x-3y)=
Click here to see answer by haileytucki(390)

Question 391195: Solve.
(x - 3)^2 + (x + 2)^2 = 17
I am not sure what to do after I distribute the square root through out the problem... This is what I have so far: (or is that wrong??)
(x^2 + 9) + (x^2 + 4) = 17
x^2 + x^2 + 13 = 17
Click here to see answer by haileytucki(390)

Question 391247: factor completely
b^3-3b^2-10b
Click here to see answer by nerdybill(6962)

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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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