Which of the following functions, when graphed in the xy-plane, will intersect the x-axis exactly 3 times?
A. f(x) = (x2 + 1)(x2 + 1)
B. f(x) = (x2 - 1)(x2 + 1)
C. f(x) = x2(x2 - 1)
D. f(x) = x2(x2 + 1)
Answer:C
Which of the following functions, when graphed in the xy-plane, will intersect the x-axis exactly 3 times?
A. f(x) = (x2 + 1)(x2 + 1) B. f(x) = (x2 - 1)(x2 + 1) C. f(x) = x2(x2 - 1) D. f(x) = x2(x2 + 1)
Explanation: C