Question

(x-1)mux2=100

Answer 1

x=11

k cho tớ nha

Answer 2

(x-1)^2=100

(x-1)x(x-1)=100

MÀ 100=10x10

Nên x-1=10

x=10+1

x=11

Answer 3

( x - 1 )² = 100

( x - 1 )² = 10²

=> x - 1 = 10

     x      = 10 + 1

     x      = 11