First, we factor the denominators:
x2−4=(x−2)(x+2) x2−4x+4=(x−2)(x−2)=(x−2)2 Now, we rewrite the expression:
(x−2)(x+2)−3x+(x−2)21 To add these fractions, we need a common denominator. The least common denominator is (x−2)2(x+2). We multiply the first fraction by x−2x−2 and the second fraction by x+2x+2: (x−2)2(x+2)−3x(x−2)+(x−2)2(x+2)1(x+2) (x−2)2(x+2)−3x2+6x+(x−2)2(x+2)x+2 (x−2)2(x+2)−3x2+6x+x+2 (x−2)2(x+2)−3x2+7x+2 We try to factor the numerator. −3x2+7x+2 doesn't seem to have (x−2) or (x+2) as a factor. So, the final answer is:
(x−2)2(x+2)−3x2+7x+2