Question

Tim x biết \(\left(2x-1\right)^6=\left(2x-1\right)^8\)

 

Answer 1

(2x-1)⁶=(2x-1)⁸

=>(2x-1)⁸-(2x-1)⁶=0

=>(2x-1)⁶[(2x-1)²-1]=0

=>(2x-1)⁶=0

=>x=1/2

và (2x-1)²-1=0

=>(2x-1)²=1

=>2x-1=-1;1

=>x=0;1

vậy x=1/2;0;1