(x-1分之x²+5x) - (x²-x分之2x²+4x)求解释

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(x-1分之x²+5x) - (x²-x分之2x²+4x)求解释
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(x-1分之x²+5x) - (x²-x分之2x²+4x)求解释
(x-1分之x²+5x) - (x²-x分之2x²+4x)求解释

(x-1分之x²+5x) - (x²-x分之2x²+4x)求解释
(x-1分之x²+5x) - (x²-x分之2x²+4x)
=(x²+5x)/(x-1)-(2x+4)/(x-1)
=(x²+3x-4)/(x-1)
=(x+4)(x-1)/(x-1)
=x+4