Номер 28.18 7 класс хелп ми

0.756²-0.241*0.756-0.415*0.756=0.756(0.756-0.241-0.415)=0.756*0.1=0.0756 0.25²*2.4+0.25*2.4²-0.25*2.4*0.65=0.25*2.4(0.25+2.4-0.65)=0.25*2.4*2=0.5*2.4=1.2 2.49*1.63-2.12*1.63+1.63²=1.63(2.49-2.12+1.63)=1.63*2=3.26 0.16*6.41*1.25-0.16*1.25²-0.16²*1.25=0.16*1.25(6.41-1.25-0.16)=0.16*1.25*5=1