The difference of a and b is?
-always rational
-sometimes rational
-never rational
the product of a and b is ?
- always rational
- sometimes rational
- never rational
the square root of ab is?
- always rational
- sometimes rational
- never rational

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

The function show two sisters' savings account and the rate at which they plan to deposit money

Kilgore trout creates a new scale to diagnose depression. however, his scale only assesses one symptom of depression while ignoring others. which of the following is his new scale most likely lacking? a) test-retest reliability b) discriminant validity c) criterion validity d) alternate-forms reliability e) content validity f) none of the above