Question

I just need the answer

Answer 1

A. x = 2 + √2 or x = 2 - √2

Step-by-step explanation

First we have to identify the square part, which is 4x². Note that it can be written as (2x)².

Then we have to identify what would be the second term in the perfect square: -16x. Since that is twice the product of the first term and the second term we can find the second term:

`-16x=2b\cdot(2x)\Rightarrow b=-4`

Replace 4x² - 16x by (2x - 4)², but note that the third term of this perfect square is 16, so we have to subtract 16 to keep the expressions equ