Question

Which three steps are correct when solving this quadratic equation by completing the square? X^2-10x=39

Answer 1

Explanation:

Any answer that involes,

Step 1: Complete the Square

`{x}^(2) - 10x = 39`

`( ( - 10)/(2) ) {}^(2) = 25`

`{x}^(2) - 10x + 25 = 64`

Step 2: Turn the left side into a binomial

`(x - 5) {}^(2) = 64`

Step 3: Solve for x.

`x - 5 = + - 8`

`x - 5 = 8`

`x = 13`

OR

`x - 5 = - 8`

`x = - 3`

X=-3 or X=13