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1)4a2+4a+1
2)c2-8pc+16p2
3)b2-49
номер2
4)4x2-1-6x-10x=4x2-1-16x
5)6y2+30y-4y2+12y-9
6)4(x2-4xy+4y2)+16xy=4x2-16xy+16y2+16xy=4x2+16y2
26.2 а)x^2y^2(x+y)=x^3y^2+x^2y^3
б)-p^5q^8(p^3+3pq-q^4) = -p^8q^8-3p^6q^8+p^5q^12
в)-c^3d^4(c^2-d^3) = -1^5d^4+c^3d^7
г)r^7s^12()r^10+2rs-s^5) = r^17s^12+2r^8s^13-r^7s^17
26.3 a) 3x(x+y)-3x^2 = 3x^2+3xy-3x^2 = 3xy
б)7a(a-b)-7a^2 = 7a^2-7ab-7a^2 = -7ab
в)5c(c^2-d^2)-5c^3 = 5c^3-5cd^2-5c^3 = -5cd^2
г)10m(m^5+n^6) -10m^6 = 10m^6+10mn^6-10m^6 = 10mn^6
( 3sin2x*cosx)`=3(sin2x)`*cosx +3(cosx)`*(sin2x)=6cos2xcosx-3sinxsin2x