若x-3x+1=0,则4x的三方减去4(8x-12)

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若x-3x+1=0,则4x的三方减去4(8x-12)

若x-3x+1=0,则4x的三方减去4(8x-12)
若x-3x+1=0,则4x的三方减去4(8x-12)

若x-3x+1=0,则4x的三方减去4(8x-12)
x-3x+1=0
则-2x+1=0,x=1/2
所以:
4x的三方减去4(8x-12)
=4×(1/2)³-4×(8×1/2-12)
=1/2+32
=32.5