分解因式:x的立方-x的平方-4x+4

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/05 16:42:27

分解因式:x的立方-x的平方-4x+4
分解因式:x的立方-x的平方-4x+4

分解因式:x的立方-x的平方-4x+4
x³-x²-4x+4=x²(x-1)-4(x-1)
=(x-1)(x²-4)
=(x-1)(x-2)(x+2)

x^3-x^2-4x+4
=(x^3-x^2)-(4x-4)
=x^2(x-1)-4(x-1)
=(x-1)(x^2-4)
=(x-1)(x-2)(x+2)

=X^3-4X-(X^2-4)
=X(X^2-4)-(X^2-4)
=(X^2-4)(X-1)
=(X-2)(X+2)(X-1)

原式=x^3-2x^2+x^2-4x+4
=x^2(x-2)+(x-2)^2
=(x-2)(x^2+x-2)
=(x-2)(x+2)(x-1)

x³-x²-4x+4
=(x³+8)-(x²+4x+4)
=(x+2)(x²-2x+4)-(x+2)²
=(x+2)(x²-2x+4-x-2)
=(x+2)(x²-3x+2)
=(x+2((x-1)(x-2)