Heyi’ve been having trouble all day

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Which of the following values cannot be probabilities? 0.08, 5 divided by 3, startroot 2 endroot, negative 0.59, 1, 0, 1.44, 3 divided by 5 select all the values that cannot be probabilities. a. five thirds b. 1.44 c. 1 d. startroot 2 endroot e. three fifths f. 0.08 g. 0 h. negative 0.59

Witch represents the inverse of the function f(x)=1/4x-12