Question

the entire form of 3√5 is √b, then b-5a/7 is​

Answer 1

Answer:

3√5 = √(5×3²)=45

a is the order of the sure.

the order of a quadratic surd is 2

therefore, a=2

and b = 45

b-5a/7=[45-5(2)]÷7=35/7=5.

I have the same question in my book.