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Expanding this math expression->

How do you expand this expression? (3a-b)^3-Theres actually a rule that (a-b)^3 will equal a^3 - 3(a^2)b + 3a(b^2) - b^3. So (3a-b)^3 would be: 27a^3 - 9ba^2 + 3ab^2 - b^3.-the ^3 means cubed, or

What's the integration of square root(2 x-1)/square root (2x+1)

I can solve all this with completing the square of but whatcan I do with the Extension (I mean the upper part of fraction)- are there any way that I can drop the square root so its solution will be e

Is this factorable: 7x^2+8x-12

And in general, can a trinomial with a number in front of the first coefficient (i.e. 7x^2 in this case) ever be factored (please refresh my memory)..., and if so, how?-There are two ways , I know bec

Find the Value of x for which the series Σ n=1 [(3-2x)^n]/(2^n) is convergent

Apply the Ratio Test: a(n+1)/a(n) = 2^n (3-2x)^(n+1) /2^(n+1) (3-2x)^n = (3-2x) /2 The series converges if | (3-2x)/2 | |3-2x| -2 -5 5 > 2x > 1 1 1/5

What is the solution to:

If 3x+3=6(y+2), then x-2y= Can you please explain how you got to the answer too? thank you!!-3x + 3 = 6(y + 2) 3x + 3 = 6y + 12 3x - 6y = 9 x - 2y = 3-3x+3=6(y+2) x + 1 = 2 (y+2) x = 2y + 4 - 1

Can someone tell me how to solve this 2[ x-2(5+2x) ]=5(x-15)

2[ x-2(5+2x) ]=5(x-15) 2[ x- 10 - 4x] = 5x - 75 2[ -3x - 10] = 5x - 75 -6x - 20 = 5x - 75 11x = 55 x = 5-2 [ x - 10 - 4x ] = 5x - 75 2 [ - 3x - 10 ] = 5x - 75 - 6x - 20 = 5x - 75 55 = 11 x x

How to find an equation of a regression line in plain english

Hey.Im in an intro stat class, and I need to know how to find the equation of a regression line.Im not very math-minded, so could anyone give me some easy to follow steps or maybe an example problem?I

What is the value of log(base 3)[log(base4) 64]

log(base4) 64 = 3 ----> log(base3) 3 =1

Is this function even or odd

f(x)=2x+5 Itd odd I think because when I substitue -x it becomes -f(x) right?-All the answers so far are wrong. The function is neither even or odd. An even function satisfies f(x) = f(-x) for all x.

Question with Natural numbers

m and n are natural numbers. 1/m + 1/n is equal to 0,1 , what is the sum of the values that n can take ?-Do you mean 1/m + 1/n = 1/10 ? (Your use of comma for decimal is ill-advised.) If so then this

I have the answers just not sure how to solve. Any help you can give me will help. Thanks!!

1. Simplify: Root 75x^2y^3Answer= 5xy root 3y 2. What is the vertex of the parabola represented by g (x) = -2x^2 + 8x + 1Answer (2,9) 3. Let f (x) = 8 over x-4, find f (-2)Answer: f (-2) = 4/3 4. L

Help please on this Math! 10 points

If tanA = 2/3 and sinB = 5/√41 and angles A and B are in Quadrant I, find the value of tan(A + B) Thanks in Advance!-sinB = 5/sqrt(41) ==> sin^2(B) = 25/41 cos^2(B) = 1 - sin^2(B) = 1 - 25/41 = 16/41

Absolute value problem! Help please asap :) ...pleassseee help meee

Solve the following equation for all values of x: abs.(x+3)-9=2x (All answers must check, and absolute value problems have 2 answers.) Please show work and explain how you got about to your an

Calculus help with critical numbers

Find the critical numbers of the function. h(p) = (p - 3)/(p^2 + 1) need an explanation thanks!-You need to find p such that h(p) = 0 h(p) = (1 * (p^2 + 1) - (p - 3) * 2p) / (p^2 + 1)^2 h(p) = (p^2

2 math questions please helppp!!!

1.T. Rroofing manufacturing companys beginning inventory on January 1 was $1,463,850. The costs of the goods it produced durin the year was $3,828. Its ending inventory on December was $1,463,850. Wh
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