Francis did this work to solve an equation. did he make an error?

answer:

francis did make an error, he should add 2x to both sides of the equation.

5x=10.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square