Question

witch of the following is not an irratinol number..,5+√5...(2+√5)√5...(2+√5) (2-√5)..5√5,?​

Answer 1

Answer:

(2+underoot5 ) underroot 5

Step-by-step explanation:

ok i guess it

Answer 2

ANSWER: May be.........

the answer was: (2+√5) (2-√5) because

it is to in the form of a²- b² = (a+b) (a-b)

if we put the formula in this then:

= (2)² - (√5)² (as per the rule, we cancel

the root (√) to the² then

we have 5 only)

= 4 - 5

= -1

and we all knows that -1 is not a irrational number.

AND U ALL THINK THAT this is the answer (2+√5)√5 but.....

The answer is not (2+√5)√5 because in this no. √5 is already a irrational number.

So,√5 is a irrational number then (2+√5)√5 is also a irrational number.