Question

simplify(3-√5) (3+√5)​

Answer 1

Answer:

4

Step-by-step explanation:

3^2-√5^2

since

a square + b square = (a+b)(a-b)

=9-5

=4 ans

Answer 2

4

Step-by-step explanation:

(3 - √5) (3 + √5)

=> (3)² - (√5)²

[using the formula (a - b) (a + b) = a² - b², here a = 3 and b = √5]

=> 3² - √5²

=> 9 - 5

=> 4

Hence (3 - √5) (3 + √5) = 4

hope it helps.