Question

Question #c738b

Answer 1

`x=4`

Explanation:

Let the number `= x`

Given in the question, we have the expression `x^2` and the expression `4x`

From the question we know that `x^2=4x`

Now we solve like a normal quadratic:

First we factorise

`x^2-4x=0`
`x(x-4)=0`

Now we solve:
`x=0 , x=4`

We know that `x` can't be `0` as `0^2` isn't `= 4*0`

`therefore x=4`

We can check as `4^2 = 4*4`