How do you simplify sqrt15 times sqrt21?
3 Answers
Explanation:
When multiplying 2 square roots they can be combined into one.
Write each number as the product of its prime factors.
=
Explanation:
When simplifying roots of natural numbers is is often useful to first express the numbers as the product of prime numbers.
Consider:
Also:
Same thing but with a slight twist in approach
Explanation:
Look for common factors. Notice that 3 will divide into both 15 and 21 with no remainder.
Write as:
You can split these in the following way:
But
But
