# value of x rational expression

• July 30th 2012, 08:45 PM
rcs
value of x rational expression
how to show that x = 1 on this when i tried to factor both numerator and denominator are not possible?

thanks
• July 30th 2012, 08:47 PM
Prove It
Re: value of x rational expression
What's the rational expression?
• July 30th 2012, 09:30 PM
rcs
Re: value of x rational expression
I clipped on the above post sir.

is that possible?

thanks
• July 30th 2012, 09:39 PM
richard1234
Re: value of x rational expression
Come on, it's really simple. $x^2 + 4x + 7 = x^2 + 3x + 8$; a quadratic where the quadratic term even cancels out. So $4x + 7 = 3x + 8 \Rightarrow x = 1$.