(4.2х+0.8у)×6+3×(2.6+0.3у) при x=1, у= -0.1

Question

(4.2х+0.8у)×6+3×(2.6+0.3у) при x=1, у= -0.1

Answer 1

(4,2*1+0,8*(-0,1))*6+3*(2,6+0,3*(-0,1))=(4,2-0,08)*6+3*(2,6-0,03)=4,12*6+3*2,57=24,72+7,71=32,43