SOLUTION: the sum of the square of a number and five times the number is 84.find the number
Algebra.Com
Question 855998: the sum of the square of a number and five times the number is 84.find the number
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let the number be x
x^2+5x=84
x^2+5x-84
x^2+12x-7x-84=0
x(x+12)-7(x+12)=0
(x+12)(x-7)=0
x=-12 OR x=7
RELATED QUESTIONS
find a number such that the sum of seven times the number and five times the number is... (answered by mathsmiles)
When the sum of 514 and three times a positive number is subtracted from the square of... (answered by lwsshak3)
Three times the sum of five and a number is 48. Find the... (answered by stanbon)
Five times the sum of a number and seven is twenty. Find the... (answered by ewatrrr)
Five times the sum of a number and two is forty. Find the number?
(answered by texttutoring)
Five times the sum of a number and seven is twenty. Find the... (answered by jim_thompson5910)
Five times the sum of a number and thirteen is ten. Find the... (answered by erica65404)
The sum of five times a number and nine is 34 . find the... (answered by Boreal)
the sum of twice one number and three times a second number is 84 sum of thrice the first (answered by vidhyak)