x+5是2次3项式x²-kx-5的因式,那么k的值是多小

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x+5是2次3项式x²-kx-5的因式,那么k的值是多小x+5是2次3项式x²-kx-5的因式,那么k的值是多小x+5是2次3项式x²-kx-5的因式,那么k的值是多小x

x+5是2次3项式x²-kx-5的因式,那么k的值是多小
x+5是2次3项式x²-kx-5的因式,那么k的值是多小

x+5是2次3项式x²-kx-5的因式,那么k的值是多小
x²-kx-5=(x+5)(x-1)=x²+4x-5
K=-4