X^2 - 3x - 4>0
a=1, b=3, c=4
Д = b^2 - 4ac= (-3)^2 - 4•1•(-4) = 9+16 = 25= 5^2
x1 = 3+5/2= 4
x2 = 3-5/2= -1
(x^2- это значит x в квадрате и тд)
log6(16)=log6(2^4)=4log6(2)=4/log2(3*2)= log12(2)=a log2(12)=1/a
=4/(log2(3)+log2(2))=4/(log2(3)+1) log2(3*4)=1/a log2(3)+log2(4)=1
log6(16)=4/(1/a-2+1)=4a/(1-a) log2(3)+2=1/a log2(3)=1/a-2