SOLUTION: a number is 72 less than its square. Find all such numbers.
Algebra.Com
Question 308581: a number is 72 less than its square. Find all such numbers.
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
let the number be x
x^2 -72 =x
x^2-x-72=0
x^2_9x+8x-72=0
x(x-9)+8(x-9)=0
(x+8)(x-9)=0
x= -8 OR x= 9
RELATED QUESTIONS
A number is 72 less than its square. Find all such... (answered by stanbon)
A number is 90 less than its square. Find all such... (answered by Alan3354)
A number is 12 less than its square. Find all such numbers.
(answered by richwmiller)
Four times a number is twelve less than its square. find all such... (answered by sunny1992)
a number is 72 less than its square.find all such... (answered by CharlesG2)
solve using the 5 step problem solving process. Show all work.
A number is 72 less... (answered by ankor@dixie-net.com)
A number is 6 less its square. Find all such numbers. (answered by solver91311,Fombitz)
a number is 42 less than its square find all such... (answered by t0hierry,MathTherapy)
One less than the square of a number is 143. Find all such... (answered by Flannery)