How do you find roots of an equation?

Question

Ok so the equation is X to the 4 + 3X to the 3 - 3X to the second + 3X - 4. The roots we have are 1 and -4, I need all the roots. How do I do this?

Answer 1

If 1 and -4 are roots, then you know that (x-1) and (x+4) are factors. Divide your equation by (x-1) and (x+4), or (x^2+3x-4), and you are left with x^2+1.

x^2+1 = 0
x^2 = -1
x = +i and -i

Your 4 roots are 1, -4, i, -i

Answer 2

In an equation
ax^2+bx+c

the sum of the roots of equation = -b/a
the product of the roots of the equations = c/a


i did not understand ur question. the only thing i understood was that u already have the roots which u say is 1 & -4

Answer 3

Dig about half a foot down from the base of the Equation Tree . . .


(yeah, go ahead and give me a negative rating for that awful pun! I deserve it, but I couldn't resist!)