# Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2006 | January | Q#5

Hits: 3

**Question**

**a. **Write in the form , where a is an integer.

**b. **Express in the form , where b and c are integers.

**Solution**

**a.
**

We are given;

Since ;

**b.
**

We are given;

If we need a rational number in the denominator of a fraction, we need to follow procedure of “denominator rationalization” as given below.

ü If the denominator is of the form then multiply both numerator and denominator by .

ü If the denominator is of the form then multiply both numerator and denominator by .

ü If the denominator is of the form then multiply both numerator and denominator by .

We have algebraic formula;

Since ;

Please follow and like us:

## Comments