Question

giai phuong trinh x(x-1)+(1-x)=0

 

Answer 1

x=1

Ai kb vs mink ko mink k cho

Answer 2

x(x-1)+(1-x)=0\(\Leftrightarrow x^2-x+1-x=0\Leftrightarrow x^2-2x+1=0\Leftrightarrow\left(x-1\right)^2=0\Leftrightarrow x=1\)

Vậy phương trình có 1 nghiệm duy nhất là x=1

Answer 3

\(x\left(x-1\right)+\left(1-x\right)=0\)

\(x\left(x-1\right)-\left(x-1\right)=0\)

\(\Rightarrow\left(x-1\right)\left(x-1\right)=0\)

\(\Rightarrow\left(x-1\right)^2=0\)

\(\Rightarrow x-1=0\)

\(\Rightarrow x=1\)

Answer 4

x(x-1) + (1-x) =0

x(x-1) - (x-1) =0

(x-1)(x-1) = 0

(x-1)^2 =0

x-1 =0

x=1