Jeg sliter fortsatt med denne jeg. Jeg får likningen til å bli
-x^3+2x^2-1.27x+0.253 så hva gjør jeg feil?

(0.7-x)((0.8-x)(0.5-x)-(0.1)(0.3))-(0.1)((0.2)(0.1)-(0.1)(0.8-x))+(0.2)((0.2)(0.1)-(0.1)(0.8-x)=

(0.7-x)(0.37-1.3x+x^2)-(0.1)(-0.06+0.1x)+(0.2)(-0.06+0.1x)=

(0.259-0.91x+0.7x^2-0.37x+1.3x^2 ...