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) = -x2(x + 7)(x2 + 1)
A. 0, touches the x-axis and turns around;
-7, crosses the x-axis;
-1, crosses the x-axis;
1, crosses the x-axis;
B. 0, touches the x-axis and turns around;
-7, crosses the x-axis
C. 0, touches the x-axis and turns around;
7, crosses the x-axis
D. 0, touches the x-axis and turns around;
-7, crosses the x-axis;
-1, touches the x-axis and turns around
Answer: B
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A. 0
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C. -1
D.
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Use a calculator to approximate the root to the nearest thousandth.-
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