SOLUTION: Find an integer where twice the square of the number is 11 more then 9 times the number
Algebra
->
Problems-with-consecutive-odd-even-integers
-> SOLUTION: Find an integer where twice the square of the number is 11 more then 9 times the number
Log On
Word Problems: Problems with consecutive odd even integers
Word
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Problems-with-consecutive-odd-even-integers
Question 1075312
:
Find an integer where twice the square of the number is 11 more then 9 times the number
Answer by
Boreal(15235)
(
Show Source
):
You can
put this solution on YOUR website!
number is x
2x^2-11=9x
2^2-9x-11=0
(2x-11)(x+1)=0
x=-1 ANSWER; the other root isn't an integer.
Twice the square of -1 is 2
2 is 11 more than 9(-1) or -9.