Question

Solve: x2 − 10x − 24 = 0.

x = 2, x = 12

x = 2, x = −12

x = −2, x = −12

x = −2, x = 12

Answer 1

Factor it

Answer 2

?

Answer 3

or, since you have choices, just plug in the values for x, and see which ones actually work

Answer 4

x2 − 10x − 24 = 0
x2-12x+2x-24=0
x(x-12)+2(x-12)=0
(x+2)(x-12)=0
x=-2 or x=12
Last option

Answer 5

Oh . Okay thanks

Answer 6

anytime =)

Answer 7

how do you complete the square? x^2+10x+24=0
To solve this by completing the square method!
x^2+10x+24=0
First thing is to apply any properties to cancel the constant term (24) on the left side of the equation.
A property that came to mind and which is the best - is to subtract the constant (24) from both sides of the equation.
We don't want the constant term on the left side of the equation as a process of completing the square method! (that is always the first step).
Therefore by subtracting 24 from both sides of the equation.The equation becomes- x^2+10x+24-24= 0-24
x^2+10x = -24
The second step is to... find the constant term that makes the left side a perfect square trinomial by squaring half the coefficient of x. Add this constant to both sides of the equation.(This statement might be a little bit confusing but endeavor to sit down and make sense of it by reading it carefully and apply it)-The statement is no mistake at all.
Okay lets apply step 2 rule-
half of 10(co-efficient of x) is 5 and (5)^2 = 25.1.e (by squaring half the coefficient of x )
Add this 25 to both sides of the equation...
x^2+10x = -24
x^2+10x+25 = -24+25
(x+5)(x+5) = 1
(x+5)^2 = 1
(x+5) = sqrt(1))
x+5 = +1 OR - 1
x+5= +1
x= 1-5 = -4

Answer 8

lol

Answer 9

the easy solution is x=-4 put it in the question