Question

I really need help with all of those questions:

1) 3√18 + 5√50

2) 3√8 - √32 + 3√72 - √75

3)1/√7

4)√2/√5

I am having a hard time with this lesson can you please explain how to do each one of those? thank you

Answer 1

For the first two, factor under the radicals

For the second two, multiply top and bottom by the denominator

Answer 2

ok thankz so much