Question

Help !
1) Explain in your own words why adding √5 + 7√5 = 8√5

2) Explain in your own words why adding √10 + 2√6 is not possible?

Answer 1

Answer:

1)when the roots are same they can be added

so √5+7√5=8√5

2)in this case the radicant are not same so it is not possible

Answer 2

Answer:

1) √5+7√5

let we take√5 as common

then √5(1+7)= 8√5