Question

(1-3√5)×(1+3√5)plz solve this .I don't understand to solve this

Answer 1

Answer:

Hey dude here is ur answer.

formulae (a+b) *(a-b) =a²- b²

(1-3√5) *(1+3√5) = 1² - (3√5)²

1 - 9*5= 1 - 45 = -44

Ur answer is -44

THANK YOU

Answer 2

Step-by-step explanation:

(1-3√5)*(1+3√5)

= 1^2 - (3√5)^2

{since(a^2-b^2) = (a+b)(a-b)}

= 1-9*5

=1-45

=-44

Hope this will help