Question

solve the quadratic equation!! 10x^2 – 7x – 12 = 0

Answer 1

help @qpHalcy0n ??

Answer 2

I think u mean solve for x.
If so u can use the quadratic formulae \[x=(-b\pm\sqrt{b^{2}-4ac})/2a\]

Answer 3

No need to solve for x

Answer 4

But this can be factored.

Answer 5

how??

Answer 6

Possible factors for 10 are 1 and 10 or 2 and 5
So set up two possible solutions based on these two. OK?

Answer 7

We'll follow the branch that works out

(5x ) (2x )

Now we need factors for 12.

Answer 8

4 and 3

Answer 9

6 and2

Answer 10

Start with 3 and 4, if it doesn't work, move to 6 and 2, then 12 and 1. OK?

Answer 11

(5x 3 or 4) (2x 3 or 4)
Now.. Notice the signs. we have -7x - 12

Answer 12

So either 3 is positive and 4 is negative, or the reverse. OK?

Answer 13

yess!!

Answer 14

Can you do it now?

Answer 15

so it would be (5x+3) (2x-4)

Answer 16

I get -14x with that one

Answer 17

where do you get -14??

Answer 18

3 times 2x - 4 times 5x

Answer 19

multiply it out
but
you're very close

Answer 20

do i flip the numbers

Answer 21

You'll only know if you multiply it out and it's correct
(5x + 4) (2x - 3)
??

Answer 22

this is right right???

Answer 23

@telliott99 ??

Answer 24

you can do this, can't you?

Answer 25

nooo thats why im geetting help smh

Answer 26

(px + q)(rx + s) = prx^2 + psx + qrx + qs