5.下列计算正确的是( )
| A. | (a3)2=a5 | B. | a3+a2=a5 | C. | a5÷a2=a3 | D. | ($\frac{x}{2}$)3=$\frac{{x}^{3}}{2}$ |
3.下列计算正确的是( )
| A. | 2x+1=2x2 | B. | x2•x3=x5 | C. | (x2)3=x5 | D. | (2x)3=2x3 |
2.已知x=m是方程x2-x-2016=0的一个解,则代数式m2-$\frac{2016}{m}$的值为( )
0 283105 283113 283119 283123 283129 283131 283135 283141 283143 283149 283155 283159 283161 283165 283171 283173 283179 283183 283185 283189 283191 283195 283197 283199 283200 283201 283203 283204 283205 283207 283209 283213 283215 283219 283221 283225 283231 283233 283239 283243 283245 283249 283255 283261 283263 283269 283273 283275 283281 283285 283291 283299 366461
| A. | 2014 | B. | 2015 | C. | 2016 | D. | 2017 |