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Answers by Priti S.

9m^3n-36mn^3+39m^4n^2  Find the GCF (Greatest Common Factor) : 3 m n   3 m n (3 (m^2)-12 (n^2) + 13 (m^3) n)

If the equation is x^2 - 18x + 79 = 0   Completing the Square : move the number 79 on the other side of equal sign and use formula as indicated x^2 +bx +(b/2)^2  = c + (b/2)^2   x^2 - 18x  (-18/2)^2 = -70 + (-18/2)^2 x^2 - 18x...

a.  Use substitution to solve   (substitute for y and set them equal to each other) y = 5x - 3 y = 3x - 1    5x - 3 = 3x - 1     -3x       -3x ______________ 2x - 3 = - 1     +3     +3 ______________ 2x...

  5√75 -4√50 + √48 = take this equation and break them into perfect square factors. 5√(25*3) -4√(25*2) + √(16*3)  Perfect square can come out see below for the rules 5*5√3 -4*5√2 + 4√3  25√3 -20√2 + 4√3   Now you can old add / subtract the front...

what you have found is correct but i think you accidentally lost your sign   -12/8 is correct which will simplify as -3/2  or -1.5 .   Next you will have to write out the slope intercept form equation   Y = MX + b   Now plug in the order pair...

Write this equation in Slop-intercept form and it would be the best way.   Y= MX + b    Where M => Slope and b => y-intercept and (0,2) is already a y-intercept Y=-3x/5 + 2   I hope this helps!!

the conversion from decimal to minuets is 60. 1 hours has 60 mins.   so you take the .8 *60 = 48 mins so total 24 hrs and 48 mins.     for example 1.5 hours so take .5*60 = 30 mins   I hope this helps!

For factoring start out with (  ) (  ) double brackets   factor the first term 5x^2 (which is 5x & 1x place them as indicated below) (5x     )(x    )   Now think of factor of -72  For example (8 & 9 , 12 & 6, 1 & 72,...

rewrie it as you can see the form   (x^2-5)^2   now write them twice  (x^2-5) (x^2-5) FOIL x^4 -5x^2 -5x^2 +25 combine like terms x^4 -10x^2+25

Hello   Well you are not getting the correct equation   x+3y=15 3y=-x+15 now divide 3 to both x and 15 y= -x/3 +15/3   so y=-x/3+ 5 now pick points for x (i pick the easy one to solve for) and solve for y   x...

The vertex form of a parabola's equation is generally expressed as :    y=a(x−h)^2+k Where (h,k) is the max or min.   1.      Look at the graph.   2.      Find the vertex of the graph (h,k) 3.      Vertex...

Try this link and it has given all the different sample problems with explanation.  There are at least 7 problems with different scenario. http://hotmath.com/hotmath_help/topics/simplifying-radical-expressions.html I hope this helps.

x^2-6x+12=19 (answer)

x^2 - 6x + 12 = 19           1. Move the 12 over by subtracting x^2 -6x = 19 -12              2. simplify x^2 -6x = 7    2.               3. take the middle term (-6x)  work...

y/(1/xy+1) (answer)

y/(1/(xy) +1)   Get same denominator on the bottom y/ ((1+xy)/xy)  Turn the division sign into multiplication and flip the bottom y* (xy)/ (1+xy)  Simplify = xy^2/(1+xy)    

 If questions is rewritten saying a CD cost is 3 books. and on 3 books and 2 CD you spent $18. Then we can solve the problem as below. b = price of books & c= price of cds 3b + 2c = 18  c = 3b I am using substitution to solve 3b + 2(3b)...