Question

Solve the equation by factoring:
-2x^2+12x­-16=0
Would the answer be 4, 2 or -4, -2?

Answer 1

can you show us your work?

Answer 2

Hint:

We can factor 2 from the equation before factoring the rest of it.

And then:

8 * (-2) = -16

8 + (-2) = 6

Answer 3

you can factor a 2 and be left with (x^2+6-8)=0.

Answer 4

@Photon336 this is what I did:
-4 + x = 0 >> -4 + 4 + x = 0 + 4
-4 + 4 = 0
0 + x = 0 + 4
x = 0 + 4
0 + 4 = 4
x = 4

2 + -1x = 0
2 + -2 + -1x = 0 + -2
2 + -2 = 0
0 + -1x = 0 + -2
-1x = 0 + -2
0 + -2 = -2
-1x = -2
x = 2

Answer 5

You couldve done it an easier way ;o

2x^2+12x-16
2(x^2+6-8)
2(x-4)(x-2)
x-4=0 x=4
x-2=0 x=2

Answer 6

@MarrBear you're right, however this is how my teacher had described and so I simply followed directions but thank you! now I know. And thank you for your help as well x

Answer 7

Of Courseeee.