3X(3X+2)-5X(X-1)-(2X)二次方 化简
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3X(3X+2)-5X(X-1)-(2X)二次方化简3X(3X+2)-5X(X-1)-(2X)二次方化简3X(3X+2)-5X(X-1)-(2X)二次方化简3X(3X+2)-5X(X-1)-(2X)^
3X(3X+2)-5X(X-1)-(2X)二次方 化简
3X(3X+2)-5X(X-1)-(2X)二次方 化简
3X(3X+2)-5X(X-1)-(2X)二次方 化简
3X(3X+2)-5X(X-1)-(2X)^2
=9X^2+6X-5X^2+5X-4X^2
=11X
原式=9x²+6x-5x²+5x-4x²
=11x
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