Question

Find the coefficient of x in the expansion of (x-4)square {with explanation}​ please

Answer 1

Answer:

The answer is $-8$

Step-by-step explanation:

Using  

       $\boxed{(a-b)^2=a^2-2ab+b^2}$

We have

      $(x-4)^2=x^2-2(x)(4)+4^2$

                   $=x^2-8x+16\\=x^2+(-8)x+16$

Clearly the coefficient of $x$ is $-8$