Question

A2-5a+1=0 solve a2-1÷a and a4+1÷a2​

Answer 1

How to solve for exponents

For xn = y; solve for n by taking the log of both sides of the equation:

For:

xn=y

Take the log of both sides:

logxn=logy

By identity we get:

n⋅logx=logy

Dividing both sides by log x:

n=logylogx