Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
You are not logged in.
#1 2005-05-13 11:47:03
- im really bored
- Full Member
Offline
Another Algebra Problem
if x = (c - ab) / (a - b) , find the value of the expression a(x + b) in simplified form
So far I have gotten this far
substitute : a ( (c - ab) / (a - b) + b )
simplify: ( a(c - ab) / a - b ) + ( ab/ 1 )
( a(c - ab) + ab(a - b) ) / (a - b)
( ca - a^2(b) + a^2(b) - ab^2 ) / (a - b)
( ca - ab^2 ) / (a - b)
Is this all I could simplify it, or am I missing something?
#2 2005-05-13 14:53:21
- MathsIsFun
- Administrator
Offline
Re: Another Algebra Problem
That's as far as I can get.
Just express it as: a(c-b^2) / (a-b)
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman