First, we factor the denominators:
3x+3=3(x+1) x2−1=(x−1)(x+1) 3x2−3=3(x2−1)=3(x−1)(x+1) So, the equation can be written as:
3(x+1)4a2+(x−1)(x+1)3a+3=3(x−1)(x+1)2a2+x−13 We multiply both sides of the equation by 3(x−1)(x+1) to clear the denominators. We assume x=1 and x=−1: 3(x−1)(x+1)(3(x+1)4a2+(x−1)(x+1)3a+3)=3(x−1)(x+1)(3(x−1)(x+1)2a2+x−13) (x−1)(4a2)+3(3a+3)=2a2+3⋅3(x+1) 4a2(x−1)+9a+9=2a2+9(x+1) 4a2x−4a2+9a+9=2a2+9x+9 4a2x−9x=2a2+4a2−9a (4a2−9)x=6a2−9a x=4a2−96a2−9a x=(2a−3)(2a+3)3a(2a−3) If 2a−3=0, then we can simplify: x=2a+33a We are given x>2. So, 2a+33a>2. 2a+33a−2>0 2a+33a−2(2a+3)>0 2a+33a−4a−6>0 2a+3−a−6>0 2a+3a+6<0 −6<a<−23 We also need to check the condition 2a−3=0, so a=23. Since 23 is not in the range −6<a<−23, we don't need to exclude any values. Also, we need to make sure that x=1 and x=−1. If x=1, 2a+33a=1, so 3a=2a+3, so a=3. This is not in the range −6<a<−23. If x=−1, 2a+33a=−1, so 3a=−2a−3, so 5a=−3, so a=−53. This is not in the range −6<a<−23.