Register Now

Login

Lost Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: A) ( x – 1)¹⁰⁰=( x – 1) B) ( 2x + 1)¹⁰=( 2x + 1

Toán Lớp 6: A) ( x – 1)¹⁰⁰=( x – 1)
B) ( 2x + 1)¹⁰=( 2x + 1

Comments ( 2 )

  1. a) $(x – 1) ^{100}$ = ( x – 1)
    ⇒ ( x – 1) = 0 
        ⇒ x = 0 + 1 = 1 
    b) $(2x + 1)^{10} = ( 2x + 1)
        ⇒ 2x + 1 = 0 
        2x = 0 – 1 = -1
      ⇒ x = -1 : 2 = -$dfrac{1}{2}$  
     
     

  2. a)
    ĐK:x∈N
    ⇒\(\left[ \begin{array}{l}(x-1)=1\\(x-1)=0\end{array} \right.\) 
    ⇒\(\left[ \begin{array}{l}x=2\\x=1\end{array} \right.\) 
    Vậy \(\left[ \begin{array}{l}x=2\\x=1\end{array} \right.\) 
    b)
    ĐK:x∈N
    ⇒(2x+1)=1
    ⇒x=0
    Vậy x=0

Leave a reply

222-9+11+12:2*14+14 = ? ( )