D=4+12=16
x1=(-2-4)/2=-6/2=-3
x2=(-2+4)/2=2/2=1
Ответ: 1
Ответ & & & & & & & & &) & & & &
A)log(2)2^3=3*log(2)2=3*1=3
б)log(5)5^7=7*log(5)5=7*1=7
в)log(9)9^1999=1999*log(9)9=1999*1=1999
г)2^(log(2)5)=5^(log(2)2)=5^1=5
д)3^(log(3)90)=90^(log(3)3)=90^1=90
е)5^(log(5)1/2)=(1/2)^(log(5)5)=(1/2)^1=1/2
<span>(223440-130х):35=6020
</span>223440-130х=<span>6020*35</span>
223440-130х=210700
130x=223440-210700
130x=12740
x=12740/130
x=98