Question

срочно________________________________________________________

Answer 1

$5*(sqrt{2}-1)^{x}+(sqrt{2}+1)^{x}-2=0\\5(sqrt{2}-1)^{x}+frac{1}{(sqrt{2}-1)^{x}}-2=0\\(sqrt{2}-1)^{x}=m,m>0\\5m+frac{1}{m}-2=0\\5m^{2}-2m+1=0,mneq 0\\D=(-2)^{2}-4*5*1=4-20=-16<0$

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