Question

I need help with the first question and x^2-8x is not the right answer

Answer 1

Given

`f(x)=x^2-8x`

To find the standard form of the quadratic equation.

Step-by-step explanation:

It is given that,

`f(x)=x^2-8x`

That implies,

`\begin{gathered} f(x)=(x-4)^2-4^2(by\text{ completing the square method}) \\ =(x-4)^2-16 \end{gathered}`

Hence, the standard form of the quadratic equation is,

`f(x)=(x-4)^2-16`