32. (D)
The roots of f (x) = x^2 − 4x − 5 = (x − 5)(x + 1) are x = −1 and 5. Since areas A and B are
equal, therefore Thus,Solving on a calculator gives k (or x) equal to 8.
dmanu
(dmanu)
#1
The roots of f (x) = x^2 − 4x − 5 = (x − 5)(x + 1) are x = −1 and 5. Since areas A and B are
equal, therefore Thus,Solving on a calculator gives k (or x) equal to 8.