Question

tim x biet x^10= x^20

 

Answer 1

Minh biet dap an nhung trinh bay the nao thi minh bo tay! Cac ban giup minh nhe

Answer 2

<=> x^20 - x^10 = 0

<=> x^10.x^10 - x^10 = 0

<=> x^10( x^10 - 1 ) = 0

=> x^10 = 0 hoac x^10 - 1 = 0

=> x = 0 hoac x = -1;1