Bài làm
( x3 + 12 ) : 4 = 60 + ( -3 )
( x3 + 12 ) : 4 = 60 - 3
( x3 + 12 ) : 4 = 57
x3 + 12 = 57 . 4
x3 + 12 = 228
x3 = 228 - 12
x3 = 216
Mà 216 = 63
=> x3 = 63
=> x = 6
Vậy x = 6
# Học tốt #
\(\left(x^3+12\right)\div4=60+\left(-3\right)\)
\(\left(x^3+12\right)\div4=57\)
\(x^3+12=57\times4\)
\(x^3+12=228\)
\(x^3=228-12\)
\(x^3=216\)
\(\Rightarrow x^3=6^3\)
\(x=6\)