Question

Упростите x+0,5*(2,3x-0,4x) и найдите его значение при x=0,1

Answer 1

x+0,5*(2,3x-0,4x)=x+1,15x-0,2x=2,15x-0,2x=1,95x при x=0,1
1,95*0,1=0,195

Answer 2

<em />х+0.5*(2.3х-0.4х)=х+0.5*1.9х
при х=0.1
0.1+0.5*(1.9*0.1)=0.1+0.5*0.19=0.1+0.095=0.195

х+0.5*(2.3х-0.4х)=х+0.5*2.3х+0.5*(-0.4х)=х+1.15х+(-0.2х)=1.95х
при х=0.1
1.95*0.1=0.195