Find (2+r)(2+s)(2+t)(2+u) if r, s, t, and u are the roots of f(x)=3x^4-x^3+2x^2+7x+2.

f(x) = (x - r)(x - s)(x - t)(x - u)

 

f(-2) = (-2 - r)(-2 - s)(-2 - t)(-2-u) = (2 + r)(2 + s)(2 + t)(2 + u).

 

Solve for f(-2) and you will receive your answer!