The problem provides the equation of a function $y = -x(x-2)^2$ and its graph. The question does not explicitly ask for anything but based on the format of the request, I will describe the properties of the function.

AlgebraPolynomialsCubic FunctionsRootsGraphingCalculusDerivativesCritical Points
2025/4/24

1. Problem Description

The problem provides the equation of a function y=x(x2)2y = -x(x-2)^2 and its graph. The question does not explicitly ask for anything but based on the format of the request, I will describe the properties of the function.

2. Solution Steps

The equation is y=x(x2)2y = -x(x-2)^2. To understand the function, we should find its roots. The roots are the values of xx for which y=0y=0.
0=x(x2)20 = -x(x-2)^2
This equation is satisfied if x=0x=0 or (x2)2=0(x-2)^2 = 0.
If (x2)2=0(x-2)^2 = 0, then x2=0x-2 = 0, which means x=2x=2.
Thus, the roots of the function are x=0x=0 and x=2x=2. The root at x=2x=2 is a repeated root, meaning the graph touches the x-axis at x=2x=2 but does not cross it. The root at x=0x=0 is a single root, meaning the graph crosses the x-axis at x=0x=0.
Next, we can expand the expression.
y=x(x24x+4)y = -x(x^2 - 4x + 4)
y=x3+4x24xy = -x^3 + 4x^2 - 4x
This is a cubic polynomial. Since the leading coefficient is negative, the graph will tend to ++\infty as xx tends to -\infty and it will tend to -\infty as xx tends to ++\infty.
To find the y-intercept, we plug in x=0x=0, so y=0(02)2=0y = -0(0-2)^2 = 0.
The derivative is y=3x2+8x4y' = -3x^2 + 8x - 4.
To find critical points, we set y=0y' = 0:
3x2+8x4=0-3x^2 + 8x - 4 = 0
3x28x+4=03x^2 - 8x + 4 = 0
(3x2)(x2)=0(3x-2)(x-2) = 0
x=2/3x = 2/3 or x=2x = 2
These are the locations of the critical points (local max or min).

3. Final Answer

The function is y=x(x2)2y = -x(x-2)^2. It has roots at x=0x=0 and x=2x=2. The graph crosses the x-axis at x=0x=0 and touches the x-axis at x=2x=2. As xx \to -\infty, y+y \to +\infty. As x+x \to +\infty, yy \to -\infty. The y-intercept is

0. The critical points occur at $x=2/3$ and $x=2$.

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