Mathematics OpenStudy (anonymous):

3r^2+4r+10=0 solve by completing the square r= ?? jimthompson5910 (jim_thompson5910):

3r^2+4r+10=0 3(r^2+4/3r+10/3)=0 3(r^2+4/3r+4/9-4/9+10/3)=0 3((r+2/3)^2-4/9+10/3)=0 3((r+2/3)^2+26/9)=0 3(r+2/3)^2+3(26/9)=0 3(r+2/3)^2+26/3=0 So after completing the square, you should get $\large 3(r+\frac{2}{3})^2+\frac{26}{3}=0$ jimthompson5910 (jim_thompson5910):

$\large 3(r+\frac{2}{3})^2+\frac{26}{3}=0$ $\large 3(r+\frac{2}{3})^2=-\frac{26}{3}$ $\large (r+\frac{2}{3})^2=-\frac{26}{9}$ $\large r+\frac{2}{3}=\pm\sqrt{-\frac{26}{9}}$ $\large r+\frac{2}{3}=\pm\frac{i\sqrt{26}}{3}$ $\large r=-\frac{2}{3}\pm\frac{i\sqrt{26}}{3}$ $\large r=\frac{-2\pm i\sqrt{26}}{3}$ So the solutions are $\large r=\frac{-2+ i\sqrt{26}}{3} \textrm{ or }r=\frac{-2- i\sqrt{26}}{3}$

Latest Questions Gucchi: Read the story description and historical context for the short story "Daughter of Invention" and answer the question.
16 minutes ago 0 Replies 0 Medals MusicGeek: https://voca.ro/17zoRsUUmmfh Diddy - Dirty Money - Coming Home ft. Skylar Grey is
31 minutes ago 0 Replies 0 Medals nuna: Lesson 9: Language Focus: word choice and voice online practice. English 9 A unit
45 minutes ago 0 Replies 0 Medals KingCrazy: https://questioncove.com/assets/attachments/message-1621296930-60a307226f51e1a409f42400-20210517_201119_Normal.
1 hour ago 1 Reply 0 Medals giveanswersmeanthelp: Which source would be the best choice to support a research paper on the evolution of baseball in the United States? A.
1 hour ago 1 Reply 0 Medals Ferrari: Read the dialogue and choose the option with the correct adjectives missing in the blanks to complete the sentences.
3 hours ago 3 Replies 1 Medal Ferrari: HELP AAA
3 hours ago 7 Replies 1 Medal babygirl123: any bunny experts one of my bunnys just gave birth to 10 little babys and im not
41 minutes ago 3 Replies 0 Medals nipun: A long, straight wire is surrounded by a hollow metal cylinder whose axis coincides with that of the wire.
15 hours ago 0 Replies 0 Medals nipun: A long, straight wire is surrounded by a hollow metal cylinder whose axis coincides with that of the wire.
15 hours ago 0 Replies 0 Medals