Question

7sqrt-20+sqrt-45

Answer 1

\[7\sqrt{-20}+\sqrt{-45}\] need help with the steps, please and thank you!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

Okay, so what are the multiples of -20?

Answer 3

Steps? Which steps? You haven't even said what's required.

Answer 4

The steps to get the answer lol

Answer 5

What answer? To which question?

Answer 6

\[7\sqrt{-20}+\sqrt{-45}=?\]

Answer 7

root(-1) is i.
So you have 7root(20)i + root(45)i
root(20) = root (4) x root (5)
root(45) = root (9) x root(5)

Answer 8

ok, then what? do I make it 2root2*root*5, and 3root3*root5