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

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Question 165482: Use FOIL to multiply:
(3x – 8)(x – 7)

Click here to see answer by Edwin McCravy(20060) About Me 

Question 165481: Convert to scientific notation:
0.003816

Click here to see answer by jojo14344(1513) About Me 

Question 157358: My daughter has 2 homework problems that she asked for my help on but I am stumped. The directions are to add 3 terms to each pattern and then write an algebraic expression that describes the pattern. She can add the terms to the pattern (see the last 3 numbers in each line below) but we are stumped on the expression that goes with it.
Number 1 - 1, 8, 27, 64, 125, 216, 343
Number 2 - 2, 5, 14, 41, 122, 365, 1094
Thanks for your help!

Click here to see answer by Alan3354(69443) About Me 

Question 165694: For f(x) = 3x – 5, find f(2).
Click here to see answer by vleith(2983) About Me 

Question 165834: Factor completely:
3x2 + 2x – 8

Click here to see answer by Alan3354(69443) About Me 

Question 165837: Factor completely:
x2 – 9x + 20

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

Question 165835: Factor completely:
9x2 – 36y2

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

Question 165830: Perform the indicated operations:
(5x2 – 3x + 2) + (-3x2 + 9x – 8) – (x2 + 3x – 10)

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

Question 166280: n6^2 divided by 4=117 What does n=?
I thought n=-50 but I couldn't find out how to subtract 24 - -50

Click here to see answer by Mathtut(3670) About Me 

Question 166297: Evaluate -20 + (14) - 3 + 6
Click here to see answer by stanbon(75887) About Me 

Question 166362: Find the product
28. (11x + 3y)(x + 4y)

Click here to see answer by 19952008(1) About Me 

Question 166555: For which integers a, b, c does a - b -c = a -(b - c)?
Click here to see answer by jim_thompson5910(35256) About Me 

Question 166557: Hosni gave the following argument that - (a + b) = -a + -b, for all integers a and b. If the argument is correct, supply the missing reasons. If it is incorrect explain why not.
- (a + b) = (-1)(a + b)
= (-1)a + (-1)b
= -a + -b

Click here to see answer by edjones(8007) About Me 

Question 166628: Evaluate, -3(5^3-3^3)
Click here to see answer by jim_thompson5910(35256) About Me 

Question 166664: addition method
4x-2y=5
24x-9y=-3
by what constant should one of the eauations be multiplied if the x terms are to drop out?

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

Question 166657: eleven is subtracted form a number and then the difference is multiplied by 5 the result is 30

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 166767: A rectangle is 5 cm. longer than it is wide. If its length and width both increased by 3 cm. , its area is increased by 60 cm (squared). Find the dimensions of the original rectangle.
Click here to see answer by josmiceli(19441) About Me 

Question 166849: The quotient of a number and four increased by seven is negative three
Click here to see answer by jojo14344(1513) About Me 

Question 166847: Negative nine increased by three times a number is Negative six
Click here to see answer by jojo14344(1513) About Me 

Question 167158: simplify the following algebraic expression: 2k-3+k+4=
Click here to see answer by midwood_trail(310) About Me 

Question 167135: i am trying to find the gcf of x2y, xy2
Click here to see answer by midwood_trail(310) About Me 

Question 167168: factor completely
3x2 + 2x – 8

Click here to see answer by nerdybill(7384) About Me 

Question 167589: what is a binomial expression?
Click here to see answer by jim_thompson5910(35256) About Me 

Question 167656: In a certain triangle the measure of one angle is double the measure of a second angle, but is five degress less than the measure of the third angle. If the sum of the measures of the 3 interior angles is always 180 form an algebraic equation to express the problem?
I came up with a+2a-5=180, but this just doesn't seem right to me, could you please help? Thank you.

Click here to see answer by gonzo(654) About Me 
Question 167656: In a certain triangle the measure of one angle is double the measure of a second angle, but is five degress less than the measure of the third angle. If the sum of the measures of the 3 interior angles is always 180 form an algebraic equation to express the problem?
I came up with a+2a-5=180, but this just doesn't seem right to me, could you please help? Thank you.

Click here to see answer by partygirl1122(6) About Me 

Question 167695: simplify
(5x+1)^2(4x-4)^2

Click here to see answer by Alan3354(69443) About Me 

Question 167710: simplify:
(3y^3m^-5)^5

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

Question 167711: is the expression (y^-6/y^_8)^-1 the same as 1/y2 yes or no and why?
Click here to see answer by jim_thompson5910(35256) About Me 

Question 167775: Solve using the square root property:
2x2 = 40

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

Question 167787: Solve by completing the square:
x^2 + 6x + 4 = 0

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

Question 167951: hi i got a problem regarding rational expressions and i need a major help
here's the problem:
X^3 - 1 / 1 -x
thanks!

Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 168516: -5x+13= when x = 3
Click here to see answer by jojo14344(1513) About Me 

Question 168536: 2ax-2bx+ay-by
Click here to see answer by midwood_trail(310) About Me 

Question 168810: 25-3/7f=19+4/7f
Click here to see answer by checkley77(12844) About Me 

Question 168974: Write the coefficient of the middle term as the sum of two numbers, whose product equals the last term.
z^2-13z+30

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

Question 168987: find the gcf of the set monomials 240, 192
Click here to see answer by checkley77(12844) About Me 

Question 168991: factor 16x^2-40+25
Click here to see answer by checkley77(12844) About Me 

Question 168992: factor b^2-4b-5
Click here to see answer by checkley77(12844) About Me 

Question 168990: factor 16x^2-25y^2
Click here to see answer by checkley77(12844) About Me 

Question 168995: factor a^2-b^2+8a-8b
Click here to see answer by checkley77(12844) About Me 

Question 168994: factor 15x^3-32x^2+16x
Click here to see answer by checkley77(12844) About Me 

Question 168983: factor out the negative of the greatest common factor: -9b+63
Click here to see answer by Alan3354(69443) About Me 

Question 168999: factor -9b+63
Click here to see answer by Electrified_Levi(103) About Me 

Question 169000: factor 4a^4b^8c^6-49d^8
Click here to see answer by Earlsdon(6294) About Me 

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