Best Answer

Just like there is a formula for solving quadratic equations, there is one for solving cubics, but it is much larger. Cubics three roots (or zeroes, or solutions). The formula is too large to be read comfortably here, so I've included a link to the relevant Wikipedia page where you can see the full formula; check under "related links".

User Avatar

Wiki User

12y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

14y ago

First set the function equal to zero. x^3 - 4*x^2 - 9*x + 36 = 0 Then factorise the left hand side. x^2*(x-4) - 9*(x-4) = 0 (x-4)*(x^2-9) = 0 or (x-4)*(x-3)*(x+3) = 0 For the product [multiple] of these three factors to be zero, one of them must be zero. So, x-4 = 0 or x-3 = 0 or x+3 =o ie x = 4 or x = 3 or x = -3

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you get the zeros x3 4x2 9x plus 36?
Write your answer...
Still have questions?
magnify glass
Related questions

What is the answer to x cubed plus 4x squared minus 9x minus 36 divided by x plus 3?

Dividend: x3+4x2-9x-36 Divisor: x+3 Quotient: x2+x-12

What are the real zeros of x3 4x2-9x-36?

Unfortunately, limitations of the browser used by means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "times", "divided by", "equals".

What is the discriminant of the equation 4x2 plus 1 equals 9x-2?

The discriminant is 33.

What is the answer to 6x plus 47 equals 9x plus 11?

6x + 47 = 9x + 11 6x + 36 = 9x 36 = 3x 12 = x

4x2-9x plus 1 equals 0?

sure it does... that would be true

How do you solve 44 equals 9x plus 8?

44 = 9x +8 36=9x 4=x

What is the slope of 9x plus 18y equals 36?

9x+18y = 36 18y = -9x+36 y = -1/2x+2 which is now in slope intercept form the slope being -1/2

What is the trinomial for 5x plus 4 9x plus 9?

(5x+4)(9x+9) FOIL First (5x*9x=45x**2) Outside (5x*9=45x) Inside (4*9x=36x) Last (4*9=36) 45x**2+45x+36x+36 45x**2+81x+36 9(5x**2+9x+4x)

Simplify this polyinomal10x plus 8x-6x3 plus 4x2 plus 12x3-x plus 20?

10x + 8x - 6x3 + 4x2 + 12x3 - x add the like terms. all the x's are like terms. al the x squared are like terms. all the x cubed are liked terms. 6x3 + 12x2 + 9x

How do you factor x squared plus 9x minus 36?

(x + 12)(x - 3)

What binomial is a factor of both x2 plus 5x-36 and x2-9x plus 20?

x - 4. x^2 + 5x - 36 = (x - 4) (x + 9) x^2 - 9x + 20 = (x - 4) (x - 5)

What is 4 plus 7 plus 9X?

11 + 9X