SOLUTION: Please solve these rational expressions, 1. 2x^2-14x/x^2-10x+21 2.1-3x/3x^2+14x-5 3.(X+2)^2/x^2-4 4.3a^2+15a/a^3-25a 5.a^2+2a/a^2+3a+2 6.12-4a

Algebra ->  Rational-functions -> SOLUTION: Please solve these rational expressions, 1. 2x^2-14x/x^2-10x+21 2.1-3x/3x^2+14x-5 3.(X+2)^2/x^2-4 4.3a^2+15a/a^3-25a 5.a^2+2a/a^2+3a+2 6.12-4a      Log On


   

Question 145461: Please solve these rational expressions,
1. 2x^2-14x/x^2-10x+21


2.1-3x/3x^2+14x-5


3.(X+2)^2/x^2-4


4.3a^2+15a/a^3-25a


5.a^2+2a/a^2+3a+2


6.12-4a/2a^2-18
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
2x^2-14x/x^2-10x+21
=(2x(x-7))/((x-7)(x-3)) Factor
=2x/(x-3) cancel out (x-7)
.
1-3x/3x^2+14x-5
=-(3x-1)/(3x-1)(x+5) factor
=-1/(x+5)
.
3a^2+15a/a^3-25a
=3a(a+5)/a(a^2-25)
=3(a+5)/(a+5)(a-5)
=3/(a-5)
.
You should now be able to do the other 3.
.
Ed