Х * 12.5 + 100 = х * 16 - 12
12.5х+100 = 16х-12
12.5х-16х = -100-12
-3.5х = -112
х = -112:(-3.5)
х = 32
Ответ: 32 человека
4x^2+4x+1=0
D=4^2-(4*1*4)=16-17=0
X1=-4/2*4=-4/8=-1/2
ОДЗ
x>0 U y>0
log(3)(x/2y)=2⇒x/2y=9⇒x=18y
x+2y=60
18y+2y=60
20y=60
y=60:20
y=3
x=18*3
x=54
x/y=54/3
<span>x/y=27</span>
(а²-1)(а-2)-а³+2а²+а=а³-2а²-а+2-а³+2а²=2-а