要过程(1)x^3-729=0 (2)216x^3+1=0 (3)(x+5)^3+27=0 (4)(8-0.1x)^3+0.027=0(1)x^3-729=0 (2)216x^3+1=0 (3)(x+5)^3+27=0 (4)(8-0.1x)^3+0.027=0

问题描述:

要过程(1)x^3-729=0 (2)216x^3+1=0 (3)(x+5)^3+27=0 (4)(8-0.1x)^3+0.027=0
(1)x^3-729=0 (2)216x^3+1=0 (3)(x+5)^3+27=0 (4)(8-0.1x)^3+0.027=0

(1)9 (2) -1/6 (3) -8 (4) 87

1.x³-729=0x³=9³x=92.216x³+1=0(6x)³=-16x=-1x=-1/63.(x+5)³+27=0(x+5)³=-27(x+5)³=(-3)³x+5=-3x=-84.(8-0.1x)³+0.027=0(8-0.1x)³=-0.027(8-0.1x)³=(-...