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

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) (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

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