Question

Question Below.

Answer 1

What's the question?

Answer 2

Okay, so the first one is easy. Just graph it at desmos

Answer 3

The second one, factoring. \(\Large x^2+2x-8\)
What two numbers equal -8 when multiplied, and 2 when added?

Answer 4

for 2:
\[x ^{2} +2x -8\] is factored to \[(x-2)(x+4)\]
SO X= 2 or X= -4

For 3:
\[\frac{ -b \pm \sqrt{b ^{2}-4ac} }{ 2a }\]
where a is 1, b is 2 and c is -8
Substitute and you will get the same results for x

Answer 5

And also for the quadratic formula it is
\[x=\frac{ -b \pm \sqrt{b ^{2}-4ac} }{2a }\]

Answer 6

questions @Brill how do you factor #2 though?

Answer 7

So what 2 numbers can add to get -2 and multiply to get 8?

Answer 8

1? @Brill

Answer 9

Does 1+1=2 and 1 x 1=-8?

Answer 10

hahaaa no... @Brill

Answer 11

So what other numbers could satisfy those two requirements?

Answer 12

Hint: try numbers that will multiply to -8 first

Answer 13

2 and 4 @Brill

Answer 14

Almost
does 2 x 4= -8?

Answer 15

-4!! @Brill

Answer 16

YEP
So all you do is input 2 and -4 into
(x+2)(x-4)

Answer 17

And that's how you factor

Answer 18

THANK YOU!!! @Brill

Answer 19

No problem