Question 160130
1) subtract this: (4x/x^2+8x+12)-(x+7/x^2+3x-18) = ?
4X/(X+6)(X+2)-(X+7)/(X-3)(X+6) COMMON DENOMINATOR=(X+6)(X+2)(X-3)
[4X(X-3)-(X-7)(X+2)]/(X+6)(X+2)(X-3)
[4X^2-12X-X^2-2X+7X+14]/(X+6)(X+2)(X-3)
[3X^2-7X+14]/(X+6)(X+2)(X-3) ANSWER
2) divide this: (4x^2-25/4x^2+20x+25)/(6x-15) =
[(2X+5)(2X-5)/(2X+5)(2X+5)]/3(X-5)
[(2X-5)/2X+5)]*3(X-5)
(2X-5)*3(X-5)/(2X+5)
3(2X^2-15X+25)/(2X+5)
3(2X-5)(X-5)/(2X+5) ANSWER.
3) perform the indicated operations and simplify the result. Leave your answer in factored form : 1-(2/2-5/x)
1-(1-5/X)
1-1+5/X
5/X ANSWER. 
4) simplify : 27x^5y^-2/3x^-4y^0 = ? 
(use positive exponents only)
27X^5*3X^4/Y^2*1
27X^9/Y^2 ANSWER. 
5) simplify: (27a^2b^3)^2/3 = ?
( write the results using positive exponents.
(27A^2/B^3)^2/3
(27A^4/B^6)^1/3
CUBERT(27A^4/B^6)
3A/B^2CUBERT(A) ANSWER.
I'LL LEAVE THE REST FOR YOU TO PRACTICE WITH.
WE ARE HERE TO TEACH HOW TO SOLVE ALGEBRA, GEOMETRY, ETC. PROBLEMS, 
WE ARE NOT HERE TO DO HOMEWORK.