Question

What value is added to both sides of the equation x2 - 4x = -2 in order to solve by completing the square

Answer 1

you just add (1/2 of co-efficient of x)^2

Answer 2

so whats the co-efficient of x in this question ?

Answer 3

1?

Answer 4

no, what is the number with 'x' ?

Answer 5

2

Answer 6

So the answer would be 2 correct ? @hartnn

Answer 7

not actually
you see "-4x" ?
then co-efficient of 'x' is -4 :)

Answer 8

now just divide it by 2 what u get ?

Answer 9

and no, 2 is not correct

Answer 10

-2

Answer 11

yes, now final step is to square it
\((-2)^2 =...?\)

Answer 12

Positive 4 @hartnn

Answer 13

thats it! you'll add +4 to both sides :)

Answer 14

Awesome, thanks!

Answer 15

welcome ^_^