Question

[Lê Thị Thùy Ngân]

tim x thuoc n va x>2 de

x(x-1) .x(x-1)=(x-2)xx(x-1)

Answer 1

[KAl(SO4)2·12H2O]

x(x - 1)(x - 1) = (x - 2)xx(x - 1)

<=> x(x - 1)x(x - 1) - (x - 2)xx(x - 1) = (x - 2)xx(x - 1) - (x - 2)xx(x - 1)

<=> x(x - 1)x(x - 1) - (x - 2)xx(x - 1) = 0

<=> x²(x - 1) = 0

<=> x = 0

<=> x - 1 = 0

        x      = 0 + 1

        x      = 1

=> x = 0 hoặc 1