Question

What should be done to x^2 -8x to create a perfect square?

Answer 1

Step 1:

Write the expression

`x^2\text{ - 8x}`

Step 2:

Step 3:

a = 1 , b = -8 , c = ?

Next, find c

`\begin{gathered} b^2\text{ = 4ac} \\ (-8)^2\text{ = 4 }*\text{ 1 }*\text{ c} \\ 64\text{ = 4c} \\ c\text{ = }(64)/(4) \\ c\text{ = 16} \end{gathered}`

Final answer

Answer = 16