<em>(х-4)(2-х)=6х-8-х²;</em>
<em>-(х-4)(2-х)=-(6х-х²-8)=-6х+х²+8;</em>
<em>(4-х)(х-2)=6х-8-х²;</em>
<em>-(4-х)(2-х)=-(8-6х+х²)=6х-8-х².</em>
<u><em>(х-4)(2-х)=(4-х)(х-2)=-(4-х)(2-х)</em></u>
1. у^2-2у+4у-8=у^2+2у-8
2. 6х^2+27х-10х+45=6х^2+72+27х
3. m^3-m^2+3m+m^2-m+3=m^3+2m+3m
1) 1 целая 2/5 * 2 целых 2/3 = 7/5 * 8/3 = 56/15
2) 1 целая 2/3 * 3 целых 1/2 = 5/3 * 7/2 = 35/6
3) 56/15 - 35/6 = -63/30 = - 2,1
1)√25*2
2)√16*7
3)√25*92
4)√9/16*32/3=√6
5)√0,25*60=√15
6)√100*0,07=√7