Question

Hey every one if you could help me on some questions today that would be just grate ok here is the first one

Use the quadratic formula to solve the equation. 5x^2 - 6x - 8 = 0

Answer 1

Maybe i typed it wrong xD so c above

Answer 2

Factorise it:
\[(5x+4)(x-2)=0\]

Answer 3

\[(-b \pm \sqrt{b^2-4ac})/2a\]

Answer 4

mathematicalpro this is overkill

Answer 5

Ummm (-b \pm \sqrt{b^2-4ac})/2a ... what?

Answer 6

quadratic formula

Answer 7

Ok Yes I got that, you wrote it all jacked up any way can you help with the question or how to salve or... no help

Answer 8

ahhh then mathematicalpro is right

Answer 9

ummm Typing forever?

Answer 10

wish i could give -1 good answer xD jk Thanks for trying, I will be done will the test be the time you are done typing soo i am out

Answer 11

where a=5,b=-6 and c=-8
\[(-(-6) \pm \sqrt{(-6)^2-[4*5*(-8)]})/2(5)\]
\[(6\pm \sqrt{36+160})/10\]
\[(6\pm \sqrt{196})/10\]
\[(6+14)/10=20/10=2\]
\[(6-14)/10=-8/10=-4/5\]

so,\[2,(-4/5)\]

Answer 12

r u on a test?????????

Answer 13

No, just a pre test