Sa se calculeze, folosind formulele de calcul prescurtat:
![Sa Se Calculeze Folosind Formulele De Calcul Prescurtat class=](https://ro-static.z-dn.net/files/d9e/9dc91f60c9602e71a6b8ea2caad091b2.jpg)
Răspuns:
a) 2(x²+10x+25)-3(x²-2x+1)+x²+6x
= 2x²+20x+50-3x²+6x-3+x²+6x
= 32x+47
b) 16x²-24x+9-4(4x²-25)+12x-3
= 16x²-24x+9-16x²+100+12x-3
= -12x+106