# Math Help - Quick Help With A Question On Algebraic Fractions

1. ## Quick Help With A Question On Algebraic Fractions

A slug travels 4miles at Xmph then another 3 miles at X+4mph

write an expression to show this situation---

i think its 4/x + 3/x+4

correct me if wrong,,, then hard bit....

the total time taken is 5 hours , form an equation in x, of the type px²+qx+r=0

it give me space to answer as below....

_____________=0

2. $\displaystyle\frac{4}{x}+\frac{3}{x+4}=5\Rightarro w 4(x+4)+3x=5x(x+4)$
Now, can you transform this equation to $px^2+qx+r-0$ ?