Question

root 80-5*root 20+root 45

Answer 1

Answer:

There is an error in your question...

The question should be

Root80 - root5* root20 + root45

(√80 - √5) *(√20+√45)

(4√5-√5)*(2√5+3√5)

(3√5)*(5√5)

75

Hope it may help you......