Question

please can you solve​

Answer 1

Answer:

answer is= -8√5

Step-by-step explanation:

(√5-2)² - (√5+2)²/ (√5)² - (2)²

by using formula: (a+b)²= a²+2ab+b²

[(√5)² - 2×2×√5 +(5)²] - [(√5)² + 2×2×√5 +(2)²]/ 5-4

(5- 4√5 + 4) - (5+ 4√5 + 4)

opening the brackets

5- 4√5 +4 - 5 -4√5 - 4

5 and 4 getting cancel

answer is= -8√5