Ask Question
10 October, 16:43

Solve the equation by completing the square. - 9n^2+79+=-18n

+3
Answers (1)
  1. 10 October, 16:56
    0
    Hello,

    -9n²+79=-18n

    ==>9n²-18n-79=0

    ==>9 (n²-2n+1-1) - 79=0

    ==>9 (n-1) ²-88=0

    ==>[3 (n-1) - 2√22][3 (n-1) + 2√22]=0

    ==>3 (n-1) = 2√22 or 3 (n-1) = - 2√22

    ==>n-1=2/3*√22 or n-1=-2/3*√22

    ==>n=1+2/3*√22 or n=1-2/3*√22
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Solve the equation by completing the square. - 9n^2+79+=-18n ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers