Question

Упростить при х=0,1 у=100

(4,2х+0,8у)*6+3*(2,6x+0,3y)
 

Answer 1

25.2x+4.8y+7.8x+0.9y= 33x+5.7y
33*0.1+5.7*100=3.3+570=573.3