Question 209823: xx+9=30x
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! x^2 +9= 30x
.
x^2 -30x +9 =0
.
use quadratic fromuls to solve
.
a=1,,,,,b-(-30),,,,,c= 9
.
x=[ -(-30) +/- sqrt{ (-30)^2 -4(1)(9)}]/2(1)
.
x=[30 +/- sqrt {900-36}]/2
.
x=[3- +/- sqrt864] /2
.
x=[3 +/- 29.39]/2
.
x= .303,,,,29.697
.
|
|
|
