Question

How do you simplify `-7sqrt98`?

Answer 1

`-7sqrt(98)rArr-49sqrt(2)`

Explanation:

Try to factor the radical so that it contains a perfect square.

In this case, we can factor:

`-7sqrt(98)=-7sqrt(49*2)`

Now separate the radical into two terms and simplify:

`-7sqrt(49*2)=-7sqrt(49)sqrt(2)=-7(7)sqrt(2)=-49sqrt(2)`