Answer:
x = 4 x=-6
Explanation:
x^{2} + 2x - 24 = 0
Move the constant to the right
x^2 +2x -24+24 = 24
x^2 +2x = 24
b =2
We take b/2 and then square it
2/2 =1 1^1 =1
Add 1 to both sides
x^2 +2x+1 = 24+1
The left side is (x+b/2)^2
(x+1)^2 = 25
Take the square root of each side
sqrt((x+1)^2 ) = ±sqrt(25)
x+1 = ±5
Subtract 1 from each side
x+1-1 = -1±5
x = -1±5
x = -1+5 and x= -1-5
x = 4 x=-6