Question

Which is a set of roots for the quadratic equation x^2+10x-24=0

Answer 1

can you factor the left side?

Answer 2

i think so

Answer 3

so what two numbers multiply to -24 and add to 10?

Answer 4

-24 = ??? * ????
10 = ??? + ????

Answer 5

-12*2=-24

Answer 6

5+5=10

Answer 7

12 * -2 = -24
12 + -2 = 10

they have to be the same numbers for both...

Answer 8

6 and 4

Answer 9

it takes practice but that's the two numbers you're looking for 12 and -2.

Answer 10

ohh thanks :D

Answer 11

so the equation: x^2+10x-24=0 can be factored as
x^2+10x-24=0
(x+12)(x-2) = 0

now it's easy to solve...
x+12 = 0 and x-2=0

solve these two to get the solution for your original question.... :)

Answer 12

you ok from here? what's the solution set?

Answer 13

{12,-2}

Answer 14

^was the answer

Answer 15

no... it's {-12, 2}

Answer 16

ohh..

Answer 17

you have to solve that last two equations:
x+12=0 and x-2=0

Answer 18

that's why it's -12 and 2 and not the other way around... :)

Answer 19

ohh ok.. thanks for the help

Answer 20

yw...:)