Toán Lớp 6: (x-1²).4⁵=7.4⁶. Giúp em với ạ em cảm ơn
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Toán Lớp 6: (x-1²).4⁵=7.4⁶. Giúp em với ạ em cảm ơn
Comments ( 2 )
( x – 1^2 ) . 4^5 = 7 . 4 ^6
( x – 1^2 ) . 4^5 = 7 . 4096
( x – 1^2 ) . 4^5 = 28672
x – 1^2 = 28672 : 4^5
x – 1^2 = 28672 : 1024
x – 1^2 = 28
x – 1 = 28
x = 28 + 1
x = 29
(x – 1^2) * 4^5 = 7 * 4^6
x – 1 = 7 * 4^6 : 4^5
x – 1 = 7 * 4
x – 1 = 28
x = 28 + 1
x = 29
Vậy x = 29