Question

simplify (5 + root5) (5 - root5)

Answer 1

Given,

Term for simplification = (5+✓5) (5-✓5)

For,the simplification of the given term,we can apply the mathematical formula of a²-b² = (a+b) (a-b).

Let,

5 = a

✓5 = b

So,the given term will be = (a+b) (a-b)

Now, the given term satisfies the formula of a²-b². So,we can write the given (a+b)(a-b) term in the form of a²-b².

So,

= (5+✓5) (5-✓5)

= (5)² - (✓5)² [application of the a²-b² formula]

= 25-5

= 20

Hence,the answer of simplification is 20.

Answer 2

Answer:

now answer is 20 aa or 25 tell the answer first