Questions on Algebra: Evaluation of expressions, parentheses answered by real tutors!

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Question 243061: can you help me factor
64x^2-16x+1

Click here to see answer by oberobic(2304) About Me 

Question 243100: can you help me simplify
x^2+5x+4/X^2-4x-5

Click here to see answer by rapaljer(4671) About Me 

Question 243103: how do you simplify
x^2-2x/15(/)x-2/5

Click here to see answer by rapaljer(4671) About Me 

Question 243102: how do you simplify
x-1/x^2+2x+1(.)x^2-1/(x-1)^2

Click here to see answer by jim_thompson5910(35256) About Me 

Question 243104: how do you simplify
4-x/2x-4(-)3x-8/4-2x

Click here to see answer by rapaljer(4671) About Me 

Question 243106: can you help me solve
12/x^2-4(-)3/x-2=5/x+2

Click here to see answer by stanbon(75887) About Me 

Question 243149: how many variables in the sum 3+6d^2+d+e
Click here to see answer by Theo(13342) About Me 

Question 243159: 27 /45 = A /5 = 9 /B = C/225 = 60 /D find (C - B) / (A x D)
A. 13,000
B. 4000
C. 0.4
D -365
E -1365

Click here to see answer by checkley77(12844) About Me 

Question 243152: (7b-2b)^2 devide by(5b^2)
Click here to see answer by checkley77(12844) About Me 

Question 243151: (7b-2b)^2 devide by(5b^2)
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Question 243273: Find the coordinates of the x-intercept.
-x - 2y = 6

Click here to see answer by checkley77(12844) About Me 

Question 243395: Trting to assist 13 yr old son...I know very little about algebra.
Find the domain of this rational function.
1)f(x)=5x+6/2x-6

2)f(x)=3x-8/14x+20

Thanks for any assistance
Christine

Click here to see answer by Theo(13342) About Me 

Question 243415: Let a + b + c + d = 29 a + c = 13 and a + b + d = 19 what is the value of a ?
Click here to see answer by Alan3354(69443) About Me 

Question 243555: Write an algebraic expression for the given quantity. Let x represent the unknown value, a value diminshed by four.
Click here to see answer by jim_thompson5910(35256) About Me 

Question 243630: questions
1. write in symbols the rule to find y, double x and add 1
2. her is the formula for working out the perimeter of a rectangle:
P=2(L+W)
3.a quaterley gas bill is given by the foumula C=S+NX
where C is the total cost of the bill in pence
N is the number of units
x pence is the cost per unit
(a) caulculate the value of C when S= 860, N= 152 and X= 7
(b) rewrite the foumula so that it is written in the form N=.....
4. find the value of X(X+Y) when X= -2 and Y= 1
5. if A= 1,B= 2 and C= -3, find the value of C-AB
----
C+AB
6.?????????????????????? no question
7.?????????????????????? no question
8.?????????????????????? no question
9. write down an expression in terms of N and G for the total costin pence of N buns at 18 pence each and 5 bread rolls at 8 pence each
10. (a) expand (2x+1)(x+4)
2
(b) factorize completely 4x -6x

11. choc bars cost 27 pence each write down a fromula for the cost C pence of N choc bars
o
12. the air temperature, T C outside an aircraft flying at the a height of
H feet is given by the formaula T= 26 - h
---
500
an aircraft is flying at a height of 27,000 feet
(a) use fomula to caulculate the air tempretue outside the aircraft
o
the temprature outside an aircraft is -52 C
(b)caulculate the height of the aircraft

please be done by 2morrow thanks from mystery girl 1



Click here to see answer by user_dude2008(1862) About Me 

Question 243846: how do u factor
x^2=8x

Click here to see answer by nyc_function(2741) About Me 
Question 243846: how do u factor
x^2=8x

Click here to see answer by unlockmath(1688) About Me 

Question 243842: how do you simplify
x^2-6x+8/x-3

Click here to see answer by nyc_function(2741) About Me 

Question 243844: how do you factor
x^9-x^5

Click here to see answer by nyc_function(2741) About Me 

Question 244588: 7x+x(x-6)+9
I am not a student. I came across this problem and can't recall the steps in solving it.
Thank You
Mrs. Wieder

Click here to see answer by jim_thompson5910(35256) About Me 

Question 244788: can you help me simplify
1/9-1/x(/)9-x/9

Click here to see answer by stanbon(75887) About Me 

Question 244747: what is equal to 5a+8-2(a+4)

Click here to see answer by jim_thompson5910(35256) About Me 

Question 244782: How would factor
x^2=8x

Click here to see answer by richwmiller(17219) About Me 
Question 244782: How would factor
x^2=8x

Click here to see answer by MathTherapy(10555) About Me 

Question 244776: can you help me simplify
x^2-6x+8/x-3

Click here to see answer by jim_thompson5910(35256) About Me 

Question 244895: Hello
I have a function f(x) represented graphically, but the function f(x) is unknown. All i know is several values of f(x) at the corresponding x. How can i identify the expression of the function?

Click here to see answer by jsmallt9(3758) About Me 
Question 244895: Hello
I have a function f(x) represented graphically, but the function f(x) is unknown. All i know is several values of f(x) at the corresponding x. How can i identify the expression of the function?

Click here to see answer by Theo(13342) About Me 

Question 244936: Please simplify 6(r+1)-2+2(r-5)=
Also (x^2+3x-2)-(x^2-2x-5)=
Thanks!

Click here to see answer by jim_thompson5910(35256) About Me 

Question 245452: 4 - 6[2 - (2x + 3)]
Click here to see answer by richwmiller(17219) About Me 

Question 245758: m^8 * n^-3
Click here to see answer by TheProdicalSon(34) About Me 

Question 245757: (t+1)^0
Click here to see answer by richwmiller(17219) About Me 

Question 246200: Factor completely
8x^7-40x^6+40x^5

Click here to see answer by stanbon(75887) About Me 

Question 247884: How do I create a binomial from x^2+50x?
Click here to see answer by Alan3354(69443) About Me 

Question 248045: I need help on this problem i don't understand how to do it.
2(-x)+3(-x)+x+8=2(-x)

Click here to see answer by richwmiller(17219) About Me 

Question 248241: fifteen x minus 10 x square. factor following expression completely state reasons
Click here to see answer by richwmiller(17219) About Me 

Question 248485: what is the value of 3h+2 for h=10
Click here to see answer by College Student(505) About Me 

Question 248792: how do I figure out (-5a)squared and -5a squared
a=6

Click here to see answer by College Student(505) About Me 

Question 249102: Can you please tell me if I answered this correctly?
t^3+125
t^3+5^3
(t+3)(t^2-5t+5)
Thank you!!!

Click here to see answer by stanbon(75887) About Me 
Question 249102: Can you please tell me if I answered this correctly?
t^3+125
t^3+5^3
(t+3)(t^2-5t+5)
Thank you!!!

Click here to see answer by HeatherT719(1) About Me 

Question 249741: hello I needed to know how to evalute expressions
Click here to see answer by College Student(505) About Me 

Question 249785: [1 + (10-2)/ 2] * 9
Click here to see answer by mathhub(11) About Me 

Question 249954: 2x-8y x=-3 and y=-1

Click here to see answer by College Student(505) About Me 

Question 250137: -12=2+5x+2x
Click here to see answer by richwmiller(17219) About Me 

Question 250187: simplify -(-2)= , -|-7|=,
Click here to see answer by tutorcecilia(2152) About Me 

Question 250262: -2(x=10)=3(2x-4) is the problem,please show me the process of the problem . iam helping my son but he has no clear understanding,nor do I ,havent done this work since HS
Click here to see answer by Alan3354(69443) About Me 

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