Ответы и объяснения

2014-01-16T11:40:02+00:00
√25=5
100^1/2=√100=10
loglog _{2} 16=log_{2}2 ^{4} =4log_{2}2=4
log_{2}16=log_{2}2^4=4log_{2}2=4
2^x+3=16
2^x+3=2^4
x+3=4
x=1

log_{5}}(x-1)=2
x-1=5^2
x-1=25
x=24
log_{12}3+log_{12}4=log_{12}(4*3)=log_{12}12=1