Question

x² - 6x = - 5

x² - 2x = 24

Giup mk vs!!!

Answer 1

a) \(x^2-6x=-5\)

\(\Leftrightarrow x^2-6x+5=0\)

\(\Leftrightarrow\left(x^2-x\right)-\left(5x-5\right)=0\)

\(\Leftrightarrow x\left(x-1\right)-5\left(x-1\right)=0\)

\(\Leftrightarrow\left(x-1\right)\left(x-5\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}x-1=0\\x-5=0\end{cases}\Leftrightarrow\orbr{\begin{cases}x=1\\x=5\end{cases}}}\)

Answer 2

a)

 x.x-6.x=-5

x-6=-5

x=-5+6

x=1

b)

x.x-2.x=24

x-2=24

x=24+2

x=26

. là nhân nha anh.em học lớp 6.ahihi