1)8x
2)16(12+a)=192+16a
3)(25-t)(28+n)=700+25n-28t-tn
4)t(a+b)=at+tb
1.)f'(X)=18*x^2-2
2.)f'(X)=-36/x^9-2*x^7+4/√x
3.)f'(X) =tgx*(x+5)+ctgx
7 * 8 = 56
5 * 9 = 45
8 * 8 = 64
49 : 7 * 9 = 7 * 9 = 63
72 : 8 * 3 =72 : 24 = 3
56 : 7 * 2 = 56 : 14 = 4
16 * 4 + 6 * 3 =64 + 18 = 82
13 * 4 + 3 * 5 = 52 + 15 = 67
4 * 5 + 4 * 9 = 20 + 45 = 65
46 - 64 : 8 = 46 - 8 = 36
50 - 24 : 3 = 50 - 8 = 42
24 - 40 : 5 = 24 - 8 = 16
А) y=(-10,64)/(-1,4)=7.6
б) у=1.17/(-0.18)= -6.5
в) 1-х=(-8.4)/4.2
1-х=-2
х=3