Question

(√5-1) (√5+1) ka mane keys hii

Answer 1

Answer:

$\huge\blue{\boxed{\sf AnSwEr}}$

(√5-1)(√5+1)

we know that

(a+b)(a-b)=a²-b²

so

(√5)²-(1)²=5-1=$\huge\red{\boxed{\sf 4}}$

Answer 2

Answer:

we know that (√5-1) (√5+1) is also write in this manne(a+b) (a-b) =a2-b2

(√5) 2-(1)2

=5-1

=4