Question

If r(x) = 5 x - 4 x2 + 3 , find r (- 1 )

Answer 1

Answer:

r (-1)=-6

Step-by-step explanation:r (x)=5x-4x^2+3

If r (x)=-1 then we get,

r (-1)=5 (-1)-4 (-1)^2+3

=-5-4 (1)+3

=-5-4+3

=-9+3

=-6