Quote:
Originally Posted by AddieLove  Okay, here you go:
Your cousin is 26yrs older, so that means in math terms: 26+x
Your sister is x
You're solving for x
(26+x)*x = 560
multiply x
You get x^2 +26x = 560
Move the 560
x^2 + 26x -560 = 0
Factoring is fun!
(x+40)(x-14) = 0
Now solve each individually, and only one will make sense.
x+40=0
x=-40 WRONG!
x-14=0
x=14
Yay! |
Online math tutor needed!!
