Question

What is answer to the equation 81x=x^2 ?

Answer 1

81x=x^2

Answer is X= 0, 81

Answer 2

For this case we have the following equation:

`81x = x ^ 2`

Rewriting we have:

`x ^ 2-81x = 0`

We take common factor "x" from both terms:

`x (x-81) = 0`

It is observed that equality is fulfilled when x = 0 and when x = 81

So, the roots are:

`x_ {1} = 0\\x_ {2} = 81`

Answer:

`x_ {1} = 0\\x_ {2} = 81`