Cab you please help me...

- 2x² + x + 42x² + x + 43

Step-by-step explanation:

Given functions

r(x) = x + 4s(x) = 2x²

Finding (r-s)(x), (r+s)(x), (r*s)(-1)

(r - s)(x) = r(x) - s(x) = x + 4 - 2x² = - 2x² + x + 4(r + s)(x) = r(x) + s(x) = x + 4 + 2x² =  2x² + x + 4(r*s)(-1) = r(-1)*s(-1) = (-1 + 4)*(-1)² = 3*1 = 3

9/12 is the answer because 3/4 times 3 each is 9/12