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

Tutors Answer Your Questions about expressions (FREE)

Question 694524: (-2+5)2
Click here to see answer by RedemptiveMath(80)

Question 694480: Simplify (u^3/-3w^4)^2
Click here to see answer by lynnlo(4176)

Question 694480: Simplify (u^3/-3w^4)^2
Click here to see answer by MathTherapy(10555)

Question 694563: What factor of 24 is also a sum?
Click here to see answer by DrBeeee(684)

Question 694799: could you explain step by step
how to simplify each exspression as far as you can,multiply out brackets,collect like terms please
9x-3(7y-4x)
regards rob
Click here to see answer by stanbon(75887)

Question 694797: 4(9-5x)
Click here to see answer by Ave(106)

Question 694963: 6w/6w
*8w^2/9y
Click here to see answer by stanbon(75887)

Question 695268: What are the roots of the equation
Click here to see answer by mouk(232)

Question 695267: What is the solution set of the equation
Click here to see answer by mouk(232)

Question 695415: evaluate 6-3-(-10)-7+(-13)+33
Click here to see answer by ReadingBoosters(3246)

Question 695360: The product of a number decreased by 10 and 3 is -15
Click here to see answer by rfer(16322)

Question 695456: The expression f(x)=x^3+ax^2+bx-6 is exactly divisible by (x-1), and has a
remainder of 20 when it is divided by (x-2). Calculate the value of a and b.

Click here to see answer by reviewermath(1029)

Question 695887: -6-(-15)

Click here to see answer by ReadingBoosters(3246)

Question 695892: Evaluate each expression.
r + 3s - 7, if r = 9 and s = 4
Click here to see answer by BigToosie(32)

Question 695903: a^2_2ab+b^2
a_b
Click here to see answer by Alan3354(69443)

Question 695922: 7-2[-6-(2-5)]
Click here to see answer by rfer(16322)

Question 696262: Evaluate: 4(-2)(-1)(5)(-2)
Click here to see answer by checkley79(3341)

Question 696267: Simplify: -28k - (-18k)-14k
Click here to see answer by checkley79(3341)

Question 696272: Evaluate: z-x/y if x= -6,y=4, and z=10
Click here to see answer by jim_thompson5910(35256)

Question 696443: What is the answer to this problem 4(3z-1)-5(z+2)=5(z+1) I need to show my work please!
Click here to see answer by jim_thompson5910(35256)

Question 696698: 3y/y(5y-1) + 2/5y-1
Click here to see answer by algebrahouse.com(1659)

Question 696809: Differentiate:
y = x^3 - 2x^2 / cubic root x^2
What I have done:
y = x^3 - 2x^2 / x^2/3
dy/dx
= x^2/3 (3x^2 - 4x) - (x^3 - 2x^2) (2/3x^-1/3)
= 3x^8/3 - 4x^5/3 - 2/3x^8/3 + 4/3x^-2/3 / x^4/3
= 7/3x - 4x^5/3 + 4/3x^-2/3 / x^4/3
= 7/3x^-1/3 - 4x^1/3 + 4/3x^-2
Is my answer correct? Please let me know within 2 days as I have exam and I am unable to visit my teachers / classmates for help. Thanks!
Click here to see answer by Edwin McCravy(20060)

Question 696781: What is the coefficient of x^2y^5 when (x-2y)^7 is expanded?
Click here to see answer by stanbon(75887)

Question 696795: 5x 2 squeare -2y = z when x=1 y=-1 z=3

Click here to see answer by Alan3354(69443)

Question 696854: There is a heated Facebook debate going on over the answer to this problem:
6 divided by 2(1+2) (sorry, no "divided by" symbol on this pad!)
Solving the brackets first, you get 6 divided by 2(3)
The question is, is 2(3) the same thing as 2x3?
Should the division be done first, because it comes first in left-to-right sequence? 3x3 = 9?
Or should the bracketed item be distributed first? 6/6 = 1?
https://www.facebook.com/photo.php?fbid=544784552198699&set=a.499338033410018.129037.499317933412028&type=1
Click here to see answer by Alan3354(69443)

Question 696857: 4(3a+32)-3a+9=47
Click here to see answer by algebrahouse.com(1659)

Question 697504: 18-2[2-3{-2(5-4)}]
Click here to see answer by rfer(16322)

Question 697504: 18-2[2-3{-2(5-4)}]
Click here to see answer by MathTherapy(10555)

Question 697899: Please help me with combined andlike terms. The question is...-9(6+u)-2u=-10
Thank you, Chris
Click here to see answer by stanbon(75887)

Question 697915: Please help me with this equation while using the distributive property: 7(r-7)+5=33
Can you also help me with this equation: (r+2)/2=(2r)/3
Thank You!
Click here to see answer by MathLover1(20850)

Question 698208: (2/5) and 2 to the second power

Thank You
Click here to see answer by MathLover1(20850)

Question 698291: this is just a simple algebra problem but I'm confused about how PEMDAS would work on this. the problem is 6/2(1+2) (the "/" meaning divide). I worked the parentheses first, 6/2(3). now....do I multiply the 2 to the 3 in parentheses? or do the division then multiply?
Click here to see answer by KMST(5328)

Question 698480: (x-h)squared-(x-h) divided by h when x= -2 and h =3
Click here to see answer by MathLover1(20850)

Question 698680: so my teacher gave a homework problem and it says: The lengths of a triangle are represented by 3m,3m and 3m but it wants me to write an expression in simplest form,for the perimeter of the triangle.
Click here to see answer by sofiyac(983)

Question 699050: (1&2)+(3&4)
Click here to see answer by Atilojendor(1)

Question 699559: h fraction 4/9 for h = 5 1/3 whicha nswer 2 10/27, 10, 12
Click here to see answer by KMST(5328)

Question 699636: what is the greatest common factor of 15x^4y^3-21x^3y^3+6x^2y^2
Click here to see answer by Simnepi(216)

Question 699975: 335=5s
Click here to see answer by smaraya(8)

Question 700204: what is the answer to 2(3w)

Click here to see answer by Alan3354(69443)

Question 700238: 10 less than the number of ducks

Click here to see answer by Alan3354(69443)

Question 700237: 10 less than the number of ducks

Click here to see answer by Alan3354(69443)

Question 700900:

Mr. Perez can walk 3 kph. How far can he walk in (x+2) hours if x = 3?
Click here to see answer by checkley79(3341)

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