x^4-x^3-7x^2+13x-6 因式定理法
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x^4-x^3-7x^2+13x-6因式定理法x^4-x^3-7x^2+13x-6因式定理法x^4-x^3-7x^2+13x-6因式定理法x''4-x''3-7x''2+13x-6=x³(x-1)
x^4-x^3-7x^2+13x-6 因式定理法
x^4-x^3-7x^2+13x-6 因式定理法
x^4-x^3-7x^2+13x-6 因式定理法
x'4-x'3-7x'2+13x-6
= x³(x-1)-(7x² - 12x + 6)
= x³(x-1)-(7x-6)(x-1)
=(x-1)(x³-7x+6)
=(x-1)(x³-x²+x²-x-6x+6)
=(x-1)【x²(x-1)+ x(x-1)-6(x-1)】
=(x-1)【(x-1)(x²+x-6)】
=(x-1)²(x²+x-6)
=(x-1)²(x+3)(x-2)
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