![image](https://tex.z-dn.net/?f=1.%5C%3B81%5E%7B%5Cfrac14%7D-3%5Csqrt3%5Ccdot3%5E%7B%5Cfrac12%7D%3D%5Csqrt%5B4%5D%7B81%7D-3%5Csqrt3%5Ccdot%5Csqrt3%3D3-3%5Ccdot3%3D3-9%3D-6%5C%5C%0A2.%5C%3B%5Cleft%28%5Cfrac14%5Cright%29%5E%7Bx-3%7D%3C%5Cfrac1%7B16%7D%5C%5C%5Cleft%28%5Cfrac14%5Cright%29%5E%7Bx-3%7D%3C%5Cleft%28%5Cfrac14%5Cright%29%5E2%5C%5Cx-3%3E2%5C%5Cx%3E5)
2\\x>5" alt="1.\;81^{\frac14}-3\sqrt3\cdot3^{\frac12}=\sqrt[4]{81}-3\sqrt3\cdot\sqrt3=3-3\cdot3=3-9=-6\\
2.\;\left(\frac14\right)^{x-3}<\frac1{16}\\\left(\frac14\right)^{x-3}<\left(\frac14\right)^2\\x-3>2\\x>5" align="absmiddle" class="latex-formula">