anonymous one year ago What are the factors of 3x2 + 10x + 3

1. anonymous

use the quadratic formula to solve this one

2. pooja195

@Serenaishurting you can also use factoring is you wish

3. pooja195

*if

4. anonymous

how?

5. pooja195

Does it specify which method to use?

6. anonymous

$x=\frac{ -b \pm \sqrt{b^2-4ac} }{ }$ where $ax^2+bx+c=0$

7. anonymous

no it doesnt

8. pooja195

ok so you can use the formula then since @saseal typed it out ;p $x=\frac{ -b \pm \sqrt{b^2-4ac} }{ }$ where $ax^2+bx+c=0$

9. pooja195

Start by listing your abc values

10. anonymous

$x=\frac{ -b \pm \sqrt{b^2-4ac}}{ 2a }$

11. anonymous

sorry lagged and the 2a didnt show up

12. anonymous

okay thanks i got it.

13. anonymous

yw

Another way is possible.....just factor it by noting that both the coefficient of the squared term "3" and the numeric constant is "3" both are prime numbers. This means less trial and error.

It factors quite nicely: (x + 3) (3x + 1)

16. anonymous

can yall help with another?

17. anonymous

sure

18. anonymous

Graph of a cubic polynomial that falls to the left and rises to the right with x intercepts negative 2, negative 1, and 2 Which of the following functions best represents the graph?

19. anonymous

Which of the following functions best represents the graph? f(x) = x3 + x2 − 4x − 4 f(x) = x3 + 4x2 − x − 4 f(x) = x3 + 3x2 − 4x − 12 f(x) = x3 + 2x2 − 4x − 8

20. anonymous

your best bet is to graph it out, cubic stuff is pretty messy

21. anonymous

okay

22. anonymous

lemme try teaching you how to factor this without graphing

23. anonymous

okay

This problem is providing you the factors. Just multiply them and get the answer.

25. anonymous

we take this 1st option$f(x)=x^3+x^2-4x-4$ we can rewrite this as $f(x)=x^2(x+1)-4(x-1)$

|dw:1438351445649:dw|

27. Nnesha

for directions:when highest degree is an odd number then if leading coefficient is *positive * right end will rise and left end fall and if leading coefficient is *negative* right end will fall and left end will rise

28. anonymous

oh i got the answer. i just finished the test thanks for yalls help.

29. anonymous

30. Nnesha

@saseal ??

31. anonymous

nothing just bored doge

32. Nnesha

oh

33. anonymous

whale then.. o.o

34. pooja195

have more questions? on that test?

35. pooja195

nvm u finished ;p heres a refrence for next time http://pages.citebite.com/a4o3b6r4a2tjy

36. anonymous

no i finished it. im gonna have to redo it later though.

37. pooja195

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38. pooja195

Since you are new im sure you werent aware of the anti cheating policy so please dont ask any test questions on that site we dont want u to get banned

39. anonymous

how do u do that @pooja195

40. anonymous

okay..others do it though...

41. pooja195

Just because others do it doesnt mean u have to do it