Tìm x thỏa mãn 2x + 3 = -x + 6
x = 1
x = 3
x = -1
x = 9
\(\frac{3}{{40}}\)
\(\frac{{17}}{{200}}\)
\(\frac{{ - 17}}{{200}}\)
\(\frac{2}{{25}}\)
Tìm x thỏa mãn: \(\left( { - 2x + \frac{5}{2}} \right).\left( {{x^2} + 4} \right) = 0\)
x = \(\frac{5}{4}\); x = -2 ; x = 2
x = 5 ; x = -4
x = \(\frac{{ - 5}}{4}\)
x = \(\frac{5}{4}\)
Tìm n biết:
\(\frac{{{8^7} + {8^7} + {8^7} + {8^7}}}{{{3^7} + {3^7} + {3^7}}}:\frac{{{2^7} + {2^7}}}{{{6^7} + {6^7} + {6^7} + {6^7} + {6^7} + {6^7}}} = {2^n}\)
24
23
25
8