## hatemath Group Title hi my name is pj and i need help with this problem? solve the quadratic equation x2+6x+8=0 3 years ago 3 years ago

1. polpak Group Title

You can either factor it, or use the quadratic equation

2. polpak Group Title

Which do you want to do?

3. aama100 Group Title

x = 1/6 (-8 - x2)

4. aama100 Group Title

{{x = -4}, {x = -2}} ignore my fist post

5. hatemath Group Title

how do i factor it?

6. polpak Group Title

You look for two numbers that add together to give you 6 (the coefficient of the middle term), and multiply to give you 8 (the last term).

7. hatemath Group Title

ok

8. polpak Group Title

So what two numbers add to make 6 and multiply to be 8 ?

9. hatemath Group Title

2 and 4

10. polpak Group Title

Correct. So we can factor $$x^2+6x+8$$ into $$(x+4)(x+2)$$. And if our original expression was equal to 0 then the factored form will also equal 0. $$(x+4)(x+2) = 0 \implies x= -4 \text{ or } x = -2$$

11. hatemath Group Title

thank you

12. hatemath Group Title

(x+6)(x-8)=0 is that x2+6x-8=0?