Edited by kidkie, 29-12-2012 - 23:01.
$(8x+7)^{2}(4x+1)(x+1)=\frac{9}{2}$
Started By kidkie, 29-12-2012 - 23:00
#1
Posted 29-12-2012 - 23:00
- tramyvodoi likes this
#2
Posted 29-12-2012 - 23:22
Giải phương trình
Không biết có cách nào hơn không.
Nhân ra ta có pt:
$256x^{4}+768x^{3}+820x^{2}+357x +49=0$
$\Leftrightarrow \left[\begin{array} x =-1 \\\ x=\frac{-7}{8} \\\ x=\frac{-1}{4} \, \end{array}\right.$
#3
Posted 29-12-2012 - 23:27
VP bằng $\frac{9}{2}$
Edited by kidkie, 29-12-2012 - 23:31.
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