Final answer:
To rewrite an expression without parentheses, use the distributive property to expand the expression, which often simplifies solving the equation.
Step-by-step explanation:
An expression can be rewritten without parentheses by applying the distributive property, where you multiply each term inside the parentheses by the term outside. This process is known as expanding the expression.
For example, if you have an equation with nested constants inside parentheses and you replace these constants with a symbol a, the equation may look much simpler. In cases like this, you would do the replacement first and then proceed to solve the equation for the unknown variable.
When you encounter an expression with a denominator that can be rewritten as a perfect square, it's often beneficial to simplify the denominator first to make the equation easier to manage.
In other instances, where simplification is not straightforward, you would expand the expression and multiply both sides by the denominator to eliminate the fraction.