We are given the equation $y = -x(x-1)(x+1)$ and a table of $x$ values. We need to find the corresponding $y$ values for $x = -2, -1, -\frac{1}{2}, 0, \frac{1}{2}, 1, 2$.

AlgebraPolynomialsFunction EvaluationSubstitution
2025/4/23

1. Problem Description

We are given the equation y=x(x1)(x+1)y = -x(x-1)(x+1) and a table of xx values. We need to find the corresponding yy values for x=2,1,12,0,12,1,2x = -2, -1, -\frac{1}{2}, 0, \frac{1}{2}, 1, 2.

2. Solution Steps

We will substitute each xx value into the equation y=x(x1)(x+1)y = -x(x-1)(x+1) to find the corresponding yy value.
* For x=2x = -2:
y=(2)(21)(2+1)=2(3)(1)=2(3)=6y = -(-2)(-2-1)(-2+1) = 2(-3)(-1) = 2(3) = 6
* For x=1x = -1:
y=(1)(11)(1+1)=1(2)(0)=0y = -(-1)(-1-1)(-1+1) = 1(-2)(0) = 0
* For x=12x = -\frac{1}{2}:
y=(12)(121)(12+1)=12(32)(12)=12(34)=38y = -(-\frac{1}{2})(-\frac{1}{2}-1)(-\frac{1}{2}+1) = \frac{1}{2}(-\frac{3}{2})(\frac{1}{2}) = \frac{1}{2}(-\frac{3}{4}) = -\frac{3}{8}
* For x=0x = 0:
y=(0)(01)(0+1)=0(1)(1)=0y = -(0)(0-1)(0+1) = 0(-1)(1) = 0
* For x=12x = \frac{1}{2}:
y=(12)(121)(12+1)=12(12)(32)=12(34)=38y = -(\frac{1}{2})(\frac{1}{2}-1)(\frac{1}{2}+1) = -\frac{1}{2}(-\frac{1}{2})(\frac{3}{2}) = -\frac{1}{2}(-\frac{3}{4}) = \frac{3}{8}
* For x=1x = 1:
y=(1)(11)(1+1)=1(0)(2)=0y = -(1)(1-1)(1+1) = -1(0)(2) = 0
* For x=2x = 2:
y=(2)(21)(2+1)=2(1)(3)=6y = -(2)(2-1)(2+1) = -2(1)(3) = -6

3. Final Answer

The corresponding yy values are:
* x=2,y=6x = -2, y = 6
* x=1,y=0x = -1, y = 0
* x=12,y=38x = -\frac{1}{2}, y = -\frac{3}{8}
* x=0,y=0x = 0, y = 0
* x=12,y=38x = \frac{1}{2}, y = \frac{3}{8}
* x=1,y=0x = 1, y = 0
* x=2,y=6x = 2, y = -6

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