SOLUTION: x sq+5x=500 find the value of x

Algebra ->  Customizable Word Problem Solvers  -> Travel -> SOLUTION: x sq+5x=500 find the value of x      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 890957: x sq+5x=500 find the value of x
Found 2 solutions by Fombitz, MathTherapy:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2%2B5x=500
Complete the square.
x%5E2%2B5x%2B25%2F4=500%2B25%2F4
%28x%2B5%2F2%29%5E2=2000%2F4%2B25%2F4
%28x%2B5%2F2%29%5E2=2025%2F4
x%2B5%2F2=+0+%2B-+sqrt%282025%29%2F2
x=-5%2F2+%2B-+45%2F2
x=20 and x=-25

Answer by MathTherapy(10556) About Me  (Show Source):
You can put this solution on YOUR website!

x sq+5x=500 find the value of x


x%5E2+%2B+5x+=+500

x%5E2+%2B+5x+-+500+=+0

(x + 25)(x - 20) = 0

highlight_green%28x+=+-+25%29, or highlight_green%28x+=+20%29