搜搜考试网200分求高手解三道化简题,最好带过程,
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200分求高手解三道化简题,最好带过程,
1.(6x-7)(5x+4)^(-2/3)[(5x+4)*8+(6x-7)]=
(6x-7)(5x+4)^(-2/3)(46x+25)
2.(-1/3)(x^2+9)^3(x+6)^(-4/3)[x^2+9-72x(x+6))]
= (-1/3)(x^2+9)^3(x+6)^(-4/3)(-71x^2-423)
3.x^16 (x^2-5)^(-5)[(x^2-5)*3-8x^2]=x^16 (x^2-5)^(-5] )(-5x^2-15)=-5x^16 (x^2-5)^(-5] )(x^2+3)
(6x-7)(5x+4)^(-2/3)(46x+25)
2.(-1/3)(x^2+9)^3(x+6)^(-4/3)[x^2+9-72x(x+6))]
= (-1/3)(x^2+9)^3(x+6)^(-4/3)(-71x^2-423)
3.x^16 (x^2-5)^(-5)[(x^2-5)*3-8x^2]=x^16 (x^2-5)^(-5] )(-5x^2-15)=-5x^16 (x^2-5)^(-5] )(x^2+3)