tìm max s= \(\dfrac{\sqrt[3]{\left(a-2\right)\left(b-3\right)}}{a+b}\) với \(\left\{{}\begin{matrix}a\ge2\\b\ge3\end{matrix}\right.\)

cho\(\left\{{}\begin{matrix}a\ge2\\b\ge3\\c\ge6\end{matrix}\right.\)

tìm max p= \(\dfrac{bc\sqrt{a-2}+ca\sqrt[3]{b-3}+ab\sqrt[4]{c-6}}{abc}\)

cho x \(\in\) \(\left[0;1\right]\) . tìm max

p= 13\(\sqrt{x^2-x^4}\) +9\(\sqrt{x^2+x^4}\)

cho \(\left\{{}\begin{matrix}a,b,c>0\\7a+6b+5c\le24\end{matrix}\right.\)

cmr 3\(\sqrt[3]{9a+9b}\) + 2\(\sqrt{b+2c}\) + \(\sqrt{c+34}\) \(\le15\)

cho \(\left\{{}\begin{matrix}a,b,c>0\\a+b\le5\\a+b+c=13\end{matrix}\right.\) . cmr abc\(\le50\)