помогите решить,пожайлуста:
(x^2-6x)^2-81-2(x-3)^2=0
(x^2-6x-9)(x^2-6x+9)-2(x-3)^2=0
(x^2-6x-9)(x-3)^2-2(x-3)^2=0
(x-3)^2*(x^2-6x-9-2)=0
x1=3
x^2-6x-11=0
x=3+-sqrt(9+11)=3+-2sqrt(5)
x2=3-2sqrt(5)
x3=3+2sqrt(5)
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Answers & Comments
(x^2-6x)^2-81-2(x-3)^2=0
(x^2-6x-9)(x^2-6x+9)-2(x-3)^2=0
(x^2-6x-9)(x-3)^2-2(x-3)^2=0
(x-3)^2*(x^2-6x-9-2)=0
x1=3
x^2-6x-11=0
x=3+-sqrt(9+11)=3+-2sqrt(5)
x2=3-2sqrt(5)
x3=3+2sqrt(5)