a ) (x-1) tất cả mủ 2=0 b) (x+ 1)tất cả mũ 2=1 11/11/2021 Bởi Samantha a ) (x-1) tất cả mủ 2=0 b) (x+ 1)tất cả mũ 2=1
a ) ( x – 1 )² = 0 => ( x -1 )² = 0² => x – 1 = 0 x = 0 + 1 x =1 b ) (x-1)² =1 => (x-1)² = 1² => x-1 = 1 x =1+1 x =2 Bình luận
a) `(x-1)^2=0` `=> x-1=0` `=> x=1` b) `(x+1)^2=1` `=> (x+1)^2=1^2=(-1)^2` `=>` \(\left[ \begin{array}{l}x+1=1\\x+1=-1\end{array} \right.\) `=>` \(\left[ \begin{array}{l}x=0\\x=-2\end{array} \right.\) Bình luận
a ) ( x – 1 )² = 0
=> ( x -1 )² = 0²
=> x – 1 = 0
x = 0 + 1
x =1
b ) (x-1)² =1
=> (x-1)² = 1²
=> x-1 = 1
x =1+1
x =2
a) `(x-1)^2=0`
`=> x-1=0`
`=> x=1`
b) `(x+1)^2=1`
`=> (x+1)^2=1^2=(-1)^2`
`=>` \(\left[ \begin{array}{l}x+1=1\\x+1=-1\end{array} \right.\)
`=>` \(\left[ \begin{array}{l}x=0\\x=-2\end{array} \right.\)