已知多项式x²-(3k-1)xy-3y²+3mxy-8中不含xy项,则8的k+1次方乘4除以2的3m+2次方值为?
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已知多项式x²-(3k-1)xy-3y²+3mxy-8中不含xy项,则8的k+1次方乘4除以2的3m+2次方值为?
已知多项式x²-(3k-1)xy-3y²+3mxy-8中不含xy项,则8的k+1次方乘4除以2的3m+2次方值为?
已知多项式x²-(3k-1)xy-3y²+3mxy-8中不含xy项,则8的k+1次方乘4除以2的3m+2次方值为?
x²-(3k-1)xy-3y²+3mxy-8
=x²-3y²+(3m-3k+1)xy-8
不含xy项,既3m-3k+1=0
3m=3k-1
那么
8^(k+1)*4/2^(3m+2)
=8^(k+1)*4/2^(3k-1+2)
=2^(3k+3)*2²/2(3k+1)
=2^(3k+3+2-3k-1)
=2^4
=16
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