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: Giúp mình với (づ ̄ ³ ̄)づ a) 312 – [ 122 + 8 ( 27 – 24 )² ] – 12 b) ( -157 ) . ( -275 ) + 157 . ( -75 )

Toán Lớp 6: Giúp mình với (づ ̄ ³ ̄)づ
a) 312 – [ 122 + 8 ( 27 – 24 )² ] – 12
b) ( -157 ) . ( -275 ) + 157 . ( -75 )

Comments ( 2 )

  1. Giải đáp:
    $\text{a) 312 – [ 122 + 8 ( 27 – 24 )² ] – 12}$
    $\text{= 312 – [ 122 + 8 . $(3)^{2}$ ] -12}$
    $\text{= 312 – [ 122 + 8 . 9 ] -12}$
    $\text{= 312 – [ 122 + 72 ] -12}$
    $\text{= 312 – 194 – 12}$
    $\text{= 118 – 12}$
    $\text{= 106}$
    $\text{b) ( -157 ) . ( -275 ) + 157 . ( -75 )}$
    $\text{= ( -157 ) ( -275 + 75 )}$
    $\text{= ( -157 ) ( -200)}$
    $\text{= 31400}$
    Lời giải và giải thích chi tiết:
     

  2. $\text{a)312 – [ 122 + 8( 27 – 24 )² ] – 12}$
    $\text{= 312 – ( 122 + 8. 3² ) – 12}$
    $\text{= 312 – ( 122 + 8. 9 ) – 12}$
    $\text{= 312 – ( 122 + 72 ) – 12}$
    $\text{= 312 – 194 – 12}$
    $\text{= 118 – 12}$
    $\text{= 106}$
    $\text{b) ( -157 ) . ( -275 ) + 157. ( -75 )}$
    $\text{= 157. 275 + 157. ( -75 )}$
    $\text{= 157. [ 275 + ( -75  ) ]}$
    $\text{= 157 .  200}$
    $\text{= 31 400}$

Leave a reply

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

About Quỳnh