Question

simplify(5-√5) (5+√5)​

Answer 1

Answer:

5-√5) (5+√5)

$= (5) {}^{2} - ( \sqrt{5} ) {}^{2}$

$= 25 - 5 \: = 20$

Answer 2

Step-by-step explanation:

(5-√5) (5 +√5)

5×5 -√5√5

25 -5

20