Решите плиз..* log2(x^2-9)=1
log2(x^2-9)=1
x^2-9=2^1
x^2=11
x1=sqrt(11)
x2=-sqrt(11)
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log2(x^2-9)=1
x^2-9=2^1
x^2=11
x1=sqrt(11)
x2=-sqrt(11)