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saniamishin201
@saniamishin201
August 2022
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решите уравнеие пожалуйста : log5(x^2-4) log5(х-2) ; log3 два в верху ,х + log3 x-6=0.
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rima134
log5(x^2-4)=0 x^2-4=5^0 x^2-4=1 x^2=5 x=V5
log5(x-2)=0 x-2=5^0 x-2=1 x=3
log^2(3)x+log3x-6=0 t=log3(x) t^2+t-6=0 D=1+24=25 VD=5 t1=-3 t2=2
log3(x)=-3 x=3^(-3)=1/27 log3(x)=2 x=3^2=9
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Answers & Comments
log5(x-2)=0 x-2=5^0 x-2=1 x=3
log^2(3)x+log3x-6=0 t=log3(x) t^2+t-6=0 D=1+24=25 VD=5 t1=-3 t2=2
log3(x)=-3 x=3^(-3)=1/27 log3(x)=2 x=3^2=9