Preetha
  • Preetha
What is the best way to solve this quadratic: x2 + 3x – 4 = 0
Mathematics
  • Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Preetha
  • Preetha
@ganeshie8
AlexandervonHumboldt2
  • AlexandervonHumboldt2
hmm it looks like only quadratic formula is the best way
anonymous
  • anonymous
Well I guess it would be best first to check with the discriminant :P

Looking for something else?

Not the answer you are looking for? Search for more explanations.

More answers

mathmate
  • mathmate
I suggest factoring.
AlexandervonHumboldt2
  • AlexandervonHumboldt2
yeah
ganeshie8
  • ganeshie8
quadratic formula ofcourse! |dw:1444068957844:dw|
AlexandervonHumboldt2
  • AlexandervonHumboldt2
lets listen to ganishe
just_one_last_goodbye
  • just_one_last_goodbye
WAIT!!! let me have a try please ^_^
AlexandervonHumboldt2
  • AlexandervonHumboldt2
yeah preetha substitute the values using the quadratic formula solve the equation
just_one_last_goodbye
  • just_one_last_goodbye
x2 + 3x – 4 = 0 Refine: 5x - 4 = 0 Add 4 to both sides: 5x - 4 + 4 = 0 + 4 5x=4 Divide both sides by 5: \[\frac{ 5x }{ 5 } = \frac{ 4 }{ 5 } \] Answer: \[x = \frac{ 4 }{ 5 }\]
AlexandervonHumboldt2
  • AlexandervonHumboldt2
The quadratic formula is (-b+-sqrt(b^2 - 4ac))/2a where ax^2+bx+c=0 a=1 b=3 c=-4 substitute values and solve;
AlexandervonHumboldt2
  • AlexandervonHumboldt2
@just_one_last_goodbye you gave an answer lol coc lol
just_one_last_goodbye
  • just_one_last_goodbye
Pfft I gave the answer why? because c;' I know @Preetha is very smart to already know the answer
Preetha
  • Preetha
That is fine, I do have a couple of strategies now to use. And I do understand this. Thanks all for jumping in.
AlexandervonHumboldt2
  • AlexandervonHumboldt2
yeahhhhh i know k jk
imqwerty
  • imqwerty
best way is to use common sense :) we can easily see that x=1 is a root and sum of roots is -b/a =3 so 1 root is1 another will be 3-1=2
Preetha
  • Preetha
Its actually fascinating how you all have different strategies to solve this - that is very good to know.
just_one_last_goodbye
  • just_one_last_goodbye
No problem Mrs. Ram ^-^ Do I get at least 5 owl bucks? I always wanted to know what it would look like on my account
imqwerty
  • imqwerty
(:
just_one_last_goodbye
  • just_one_last_goodbye
~sigh~ . - .
just_one_last_goodbye
  • just_one_last_goodbye
WEE THE OWL BUCKS ;-; omg... thank you so much <3 I love u guys so much...
imqwerty
  • imqwerty
oops i did a silly mistake sum of roots ==> -b/a=-3 and one root is 1 so other root is -4
Nnesha
  • Nnesha
it's \[\huge\rm x^2+3x-4=0\] x squared not 2x+3x :=) `squared` that's what makes it quadratic :=) just_one_last :=)
Nnesha
  • Nnesha
as suggested above factoring would be great and AC (headphone :P ) method the best!
anonymous
  • anonymous
Preetha is asking a question!!!??? OMG! The world is ending!!!
Jaynator495
  • Jaynator495
|dw:1444693788595:dw| Click the sphere.
Jaynator495
  • Jaynator495
|dw:1444693919314:dw| Or click anywhere on this canvas
Jaynator495
  • Jaynator495
\(\color{#0cbb34}{\text{Originally Posted by}}\) @jinxhead20 Preetha is asking a question!!!??? OMG! The world is ending!!! \(\color{#0cbb34}{\text{End of Quote}}\) not the first time, she can often be found asking questions to take notes on how people answer them :P
TheSmartOne
  • TheSmartOne
Unfortunately, x2 + 3x – 4 = 0 is not a quadratic equation.

Looking for something else?

Not the answer you are looking for? Search for more explanations.