10x^2*(x^2-4x+4)=9x^2(x^2-4x+4)
10x^4-40x^3+40x^2=9x^4-36x^3+36x^2
x^4-4x^3+4x^2=0
x^2(x^2-4x+4)=0
x^2=0 x^2-4x+4=0
x1=0 D=16-16=0
x2=4/2=2
Ответ: x1=0; x2=2.
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10x^2*(x^2-4x+4)=9x^2(x^2-4x+4)
10x^4-40x^3+40x^2=9x^4-36x^3+36x^2
x^4-4x^3+4x^2=0
x^2(x^2-4x+4)=0
x^2=0 x^2-4x+4=0
x1=0 D=16-16=0
x2=4/2=2
Ответ: x1=0; x2=2.