Saved Bookmarks
| 1. |
Find the value of 27a3 +1/a3,=? if 9a2+1/a2 = 43 |
|
Answer» Step-by-step explanation: 9a^2+1/a^2=43 9a^2+1/a^2+6=49 (3a+1/a)^2=49 3a+1/a=7 cubing 27a^3+1/a^3+3(3a+1/a)(3)=343 27a^3+1/a^3=343-3*7*3=343-63=280 |
|