Questions on Algebra: Distributive, associative, commutative properties, FOIL answered by real tutors!

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Algebra: Distributive, associative, commutative properties, FOIL

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Question 70713: Add or Subtract as indicated: These are confusing to me. Please help!
(7x^2y-4xy+9xy^2)-(8x^2y+8xy+8xy^2)
Click here to see answer by tutorcecilia(2042)

Question 70783: Factor by grouping:
3b^2+16b+5
I am having a very hard time with this. Is there any trick or hints you can provide?

Click here to see answer by stanbon(26259)

Question 70790: Factor:
42a^2-29ab-5b^2

Click here to see answer by checkley75(3666)

Question 70789: Factor:
4w^2-22w+10
Click here to see answer by checkley75(3666)

Question 70787: Factor:
2r^2-7r+5
Click here to see answer by checkley75(3666)

Question 70788: Factor:

4b^2-15b+9
Click here to see answer by Nate(3495)

Question 70786: Factor:
16r^2+8r-35
Click here to see answer by checkley75(3666)

Question 70785: Factor by grouping:
3c^2+2c-21
Click here to see answer by checkley75(3666)

Question 68009: 2(-3a=5)=4(a+4)

ii know the answer is 12 but idk how to get it
Click here to see answer by mathman409(67)

Question 71360: 3(5-8)+4(6-7)
Click here to see answer by checkley75(3666)

Question 72510: Use the indicated property to write an expression that is equivalent to the following expression.
(10 • 5) •20 (associative property of multiplication)

Click here to see answer by Edwin McCravy(2920)

Question 72929: Use the distributive property to remove the parentheses in the following expression. Then simplify your result if possible.
1/4 (20 + 16)

Click here to see answer by funmath(2873)

Question 72938: What bout this math homework question?
(x + 1)(x^2 + 1)
Click here to see answer by funmath(2873)

Question 72937: what is the answer to this math problem? thanks for your help. homework is hard sometimes!
Find the Product
(x + 5)^2
Click here to see answer by Cintchr(475)

Question 72937: what is the answer to this math problem? thanks for your help. homework is hard sometimes!
Find the Product
(x + 5)^2
Click here to see answer by funmath(2873)

Question 73293: (10+(square root 20))-(4-(square root 45))
I got 12+2(square root 20)-2(square root 45)
Am I even close?
Click here to see answer by jim_thompson5910(13787)

Question 73412: y=3(x+5)(x-2)
Which of the following formulas is equivalent to the this one?
a. y=3x^2+9x-30
b. y=x^2+3x-10
c. y=3x^2+3x-10
d. y=3x^2+3x-30
Click here to see answer by jim_thompson5910(13787)

Question 73414: a=1/2b-4
Which of the following statements is true for this formulas?
a.When the value of b is less than 8, a is negative
b.When the value of b is greater than 8, a is negative?
c.When the value of b is less than 8, a is positive.
d.When the value of b is greater than 4, a is positive.
Thanks!
Click here to see answer by jim_thompson5910(13787)

Question 73614: I am not sure if you would use the foil method to answer this question or not.
(2x-y)*2. (*2 means squared)
I am confused on this question. I would really appreciate your help. Thanks
Click here to see answer by jim_thompson5910(13787)

Question 73624: The question says solve:
x(x+1)= -2(x-4)=2
This is what I did, can you tell me if I am on the right track, please?
x(x+1)= -2(x-4)=2
x*2+1x= -2x+8+2
x*2+x+2x-8-2=0
x*2+3-10=0
(x+5) (x-2)
x+5=0 x-2=0
x=-5 and x=-2
Click here to see answer by Earlsdon(4898)

Question 73618: I sort of know how to factor a perfect square but I can't figur out how to factor a cube. Factor x*3-125. Do I find the square root of a number?
Click here to see answer by bucky(1732)

Question 73969: Multiply using the FOIL method: (2x + 1)(x - 2)
A) x - 1
B) 2x^2 - 3x - 2
C) 2x^2 + 2x - 1
D) 2x^2 + 5x + 2

Click here to see answer by ffc_01(9)

Question 74826: Could you please help me figure out how to do this problem:((( 6x-3=x+2 )))
Also if it's not to much to ask for,could you help me on this problem:
((( 2/3d-35=-26+1/5d )))
P.s. I'd be more then happy if you help me on these problems!!
Click here to see answer by checkley75(3666)

Question 74980: (3x + 8)(-2)
Click here to see answer by funmath(2873)

Question 75005This question is from textbook

: (x-4) (2x+3)This question is from textbook

Click here to see answer by jim_thompson5910(13787)

Question 75013This question is from textbook

: A large petroleum storage facility has a capacity of 285,000 cubic feet. Express this capacity in gallons given that there are 7,481 gallons per cubic foot.This question is from textbook

Click here to see answer by checkley75(3666)

Question 75023: 11/2 time 3/7 time 4time 2/11 time 7/4=
Click here to see answer by checkley75(3666)

Question 75423: 6x^2-2[5x-2x(3x+1)]
Click here to see answer by tutorcecilia(2042)

Question 75431: 12+5(8)/2
Click here to see answer by don vito(18)

Question 75431: 12+5(8)/2
Click here to see answer by tutorcecilia(2042)

Question 75420: 6x-{4y-3[2x+5(x-y)]}
Click here to see answer by tutorcecilia(2042)

Question 75437: Insert grouping symbols in the proper place so that the given value of the expression is obtained. The value of the expression should be 28.
5 - 3 x 2 + 8 x 5 - 2 = 28
Click here to see answer by funmath(2873)

Question 75450: can you help me Factor the Quadratics
14. 9k^2 + 30kn + 25n^2
Click here to see answer by funmath(2873)

Question 75449: can you help me Factor the Quadratics
13. a^2 + 4ab - 3b^2
Click here to see answer by funmath(2873)

Question 75494: Hello,
How do you distribute or solve for this type of problem
(x + h -4)^2 - (x-h)^2/h
Can I use foil in the first parentheses?
Thanks a bunch.
Click here to see answer by scott8148(3382)

Question 75917: PLEASE HELP ME SIMPLIFY THIS POLYNOMIAL
49-(X+2)^2
Click here to see answer by checkley75(3666)

Question 76075: Foil
(x+3)(x+5)
Click here to see answer by rmromero(383)

Question 76162: heres the problem (3x2 - 1) to the 2 power
how do you figure it out and why that way please give me steps
Click here to see answer by jim_thompson5910(13787)

Question 76236: Use the distributive property to remove the parentheses in each expression. Then simplify by combining like terms.

7(4W - 3)- 25W
Click here to see answer by bucky(1732)

Question 76295: replace __ with the number that makes the statement true
4(2n - __) = 8n -16
Equivalent expressions -
Distributive Property -
Click here to see answer by checkley75(3666)

Question 76358: how do you factor these trinomials?
90x^2 - 143x + 56 and 132x^2 - 199x + 60
PLEASE help me!!!
Click here to see answer by scott8148(3382)

Question 76361: PLEASE HELP ME!!!
question: The area of a circle is given by A = pi(4x^2 + 12x + 9. Find the expression for the radius of the circle.
H_E_L_P!!!
Click here to see answer by Earlsdon(4898)

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