Question

What irrational number
could ADD to make the
answer rational?
√5 +____ = ______

Answer 1

`√(5) +1-√(5) =1`.

Explanation:

First, let's define an irratinal number. Irrational numbers are all numbers that can't be expressed as the fraction of 2 integers.

1. Form an equation.

Let's make the result be 1, for this, we form the following equation:

`√(5) +x=1`

2. Solve equation.

`x=1-√(5)`

3. Test the value on the initial expression.

`√(5) +(1-√(5) )=\\ \\√(5) +1-√(5) =\\ \\1`

4. Write the full expression.

`√(5) +1-√(5) =1`.