3a³b²÷a²+b(a²b-3ab-5a²b)

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  • 3a³b²÷a²+b(a²b-3ab-5a²b)

    =3ab²+a²b²-3ab²-5a²b²

    =-4a²b²

    (-2)³+√(-4)²+³√(-4)³×(﹣1/2)²-³√27

    =-8+4+(-4)×1/4-3

    =-8+4-1-3

    =-8

    (3x+1)(2x-3)-(6x-5)(x-4)

    =6x²-7x-3-6x²+29x-20

    =22x-23

    ﹙﹣5/2 a n+1的次方b²﹚÷﹙﹣1/4a n的次方b²﹚² · ﹙﹣2/5 a n的次方b n的次方﹚²

    =(-5/2a的n+1次方b²)×(2/5a n的次方b n的次方÷1/4a n的次方b²)²

    =(-5/2a的n+1次方b²)×(8/5b n-2的次方)²

    =-32/5a的n+1次方b的2n-2次方