2x+4>3x怎么算
2x+4>3x怎么算
(X-3)/(X^2-4)*(X^2-4X+4)/(x^2-x-6)-1/(x+2)怎么算?
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∫(2^x*3^x)/[(4^x)+(9^x)]dt怎么算?
(-x+2x²+5)+(4x²-3-6x)怎么算?
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2x^-X-3因式分解怎么算
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(3x^3-4x^2+5x-1)除以(x^2+3x-1) 怎么算
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∫dx/(4x^2+4x-3)怎么算