Question

If aₙ =2n² - 4 then the value of a₄ is​

Answer 1

Answer:

a4 = 2(4) ^-4

a4 = 8^ - 4

a4 = 64 - 4

a4 = 60

Answer 2

Answer:

putting n= 4 we get,

a4 = 2× 4² - 4

= 2× 16 - 4

= 32 - 4

= 28