18.已知点A(-6,y1),B(-3,y2),C(3,y3)都在函数y=(x+2)2+m的图象上,则( )
| A. | y1<y2<y3 | B. | y3<y2<y1 | C. | y3<y1<y2 | D. | y2<y1<y3 |
17.(a-b)2=( )
0 282073 282081 282087 282091 282097 282099 282103 282109 282111 282117 282123 282127 282129 282133 282139 282141 282147 282151 282153 282157 282159 282163 282165 282167 282168 282169 282171 282172 282173 282175 282177 282181 282183 282187 282189 282193 282199 282201 282207 282211 282213 282217 282223 282229 282231 282237 282241 282243 282249 282253 282259 282267 366461
| A. | a2-2ab-b2 | B. | a2+2ab+b2 | C. | a2-b2 | D. | a2-2ab+b2 |