(х+4)•(х-3)=(х+5)•(х-1)
х²-3х+4х-12=х²-х+5х-5
-3х+4х-12=-х+5х-5
х-12=4х-5
х-4х=-5+2
-3х=7
х=-3/7
1 хомячок + 1 хомячок = 2 хомячка
а + а = 2а
F ' (x) = 5cosx - 3sinx
f ' (pi/4) = 5cospi/4 - 3sinpi/4 = 5*√2/2 - 3*√2/2 = 2√2/2 = √2
<span>(1/3)^x+3=27^x
3^-(x+3)=3^3x
-x-3=3x
4x=-3
x=-3/4</span>