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共2个回答
热心网友
4x5:5x3=4:3
热心网友
²6x^3+x^2-1
=3x²(2x-1)+4x²-1
=3x²(2x-1)+(2x+1)(2x-1)
=(3x²+2x+1)(2x-1)
6x³+x²-1=(2x-1)×(3x²+2x+1)