Question

if a≠0and a-1/a=4 find: a2 +1/a2​

Answer 1

Answer:

A+1/a=4

squaring both sides we get

a2+1/a2+2*a*1/a=16

a and 1/a will cancel out each other so we are left with

a2+1/a2+2=16

a2+1/a2=14

please mark me as brainliest

Answer 2

Answer:

18

Step-by-step explanation:

simply square the first equation

then we get

a²-2a*1/a+1/a²=16

a²+1/a²=16+2

a²+1/a²=18

This is your answer Thank You........!