solve the equation by completing the square round to da nearest hundred if nessesary.

x^2 + 10x = 18
A -11.56, 1.56
B 11.56, 1.56
C -11.56, - 1.56 my answer
D 11.56, -1.56

solve the equation by completing the square

x^2 + 9x -14 = 0

A 10.35, 1.35 Meh answer
B 10.35, -1.35
C -10.35, -1.35
D -10.35, 1.35

3 answers

follow these steps
1. If the x^2 term has a coefficient other than 1, divide each term by that coefficient.
(in both of your cases, we can skip that step)
2. take half of the coefficient of the x term
3.square that
4. Add this to both sides of the equation.
5. Your left side is now a perfect square, write it as such
6. Take the √ of both sides , make sure you have ± of the constant
7. isolate x and you are done

the first one:
1. x^2 + 10x = 18
2 ..... 1/2 of 10 is 5
3. 5^2 = 25
4. x^2 + 10x + 25 = 18 + 25
5. (x+5)^2 = 43
6. x+5 = ± √43
7. x = -5 ± √43

In a solution I would write:
x^2 + 10x = 18
x^2 + 10x + 25 = 18 + 25
(x+5)^2 = 43
x+5 = ±√43
x = -5 ± √43

you do the 2nd one in the same way, show me the steps
Reiny none of that is even close to any of the options for an answer
It is choice A.
-11.56,1.56