Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = x4 - 25x2
A. 0, touches the x-axis and turns around;
25, touches the x-axis and turns around
B. 0, crosses the x-axis;
5, crosses the x-axis;
-5, crosses the x-axis
C. 0, touches the x-axis and turns around;
5, crosses the x-axis;
-5, crosses the x-axis
D. 0, touches the x-axis and turns around;
25, crosses the x-axis
Answer: C
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A. {- 
}
B. {- 
}
C. {- 2}
D. {- 
}
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. If b2 - 4ac = -56, determine the number of real and imaginary zeros that f has.
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