X-1=0
x=1
x²+4x+2=0
D=16-8=8
x=(-4-2√2)/2=-2-√2
x=-2+√2
_ + _ +
-------------(-2-√2)-----------(-2+√2)--------(1)-------------------
x∈(-∞;-2-√2) U (-2+√2;1)
12а))
(1/4 + 1/2 + 1)*log(2)(x) = 7
log(2)(x) = 4
x = 2^4 = 16
12в))
log(2) ((log(2)(x))^2) - log(2) (log(2)(x)) = 1
log(2) (log(2)(x)) = 1
log(2)(x) = 2
x = 4
13a))
4*log(2)(x) = 4
log(2)(x) = 1
x = 2
13в))
8*log(2)(x) = 12
log(2)(x) = 12/8 = 3/2
x = 2^(3/2) = V8
5⁻³=(¹/₅)³ = (0.2)³=0.008
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