Step by step
The question
Question: simplify (x + 1)/(x + 2).
A fraction with x in it is called a rational expression.
x + 1x + 2
We make it simpler like a number fraction.
6/9: both have a 3 in them.
3/3 is 1, so 2/3 is left.
We do the same with brackets.
69 = 2 × 33 × 3 = 23
1 Cross out the same
Now we write the fraction with the factors: (x + 1)/(x + 2).
= (x + 1)(x + 2)
Nothing on the top is the same as on the bottom.
So it is already as simple as it can be.
Nothing is the same on top and bottom.
Answer
= (x + 1)(x + 2)