1) 7 больше там, где 3 целых больше
2) N81*49=9*7=63 N0.3*120=N36=6 N125/N5=25 N2 1/4=N9/4=3/2=1.5 N(-17)^2=17 N3^6=3^3=27
3) 3*N4*2+N2-3*N9*2=3*2*N2+N2-3*3*N2=6N2+N2-9N2=-2N2
(N5-N2)^2= 25-2N10+2=27-2N10
(2-N3)(2+N3)=4-3=1
1. A
2. D
3. B
(8x^2-4xy)/(y-2x)=(4x(2x-y))/(y-2x)=-(4x(y-2x))/(y-2x)=-4x