Question

hi my name is pj and i need help with this problem? solve the quadratic equation x2+6x+8=0

Answer 1

You can either factor it, or use the quadratic equation

Answer 2

Which do you want to do?

Answer 3

x = 1/6 (-8 - x2)

Answer 4

{{x = -4}, {x = -2}}

ignore my fist post

Answer 5

how do i factor it?

Answer 6

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).

Answer 7

ok

Answer 8

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

Answer 9

2 and 4

Answer 10

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.

\((x+4)(x+2) = 0 \implies x= -4 \text{ or } x = -2\)

Answer 11

thank you

Answer 12

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