Question

please solve it step by step and explain the answer (NTSE)​

Answer 1

Answer:

10

Step-by-step explanation:

a² = 5+2√6

a4 = (5+2√6)(5+2√6) = (5+2√6)² = 25 + 20√6 + 24 = 49 + 20√6

1 + a4 = 50 + 20√6

1+a4/a² = 50 + 20√6÷5+2√6 = 10(5+2√6)/5+2√6

=10