What are the solutions to the equation -x^3+5x^2-3x-9=0 ?

The solutions to the equation -x^3+5x^2-3x-9=0 are x=-1,x=3

Find the zeros of -x^3+5x^2-3x-9=0

The zeros of -x^3+5x^2-3x-9=0 are x=-1,x=3

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- x^{3} + 5 x^{2} - 3 x - 9 = 0

x = - 1, x = 3

Solution steps

- x^{3} + 5 x^{2} - 3 x - 9 = 0

Factor

- x^{3} + 5 x^{2} - 3 x - 9 : - (x + 1) (x - 3)^{2}

- (x + 1) (x - 3)^{2} = 0

Using the Zero Factor Principle:

ab = 0

then

a = 0

b = 0

x + 1 = 0 or x - 3 = 0

Solve

x + 1 = 0 : x = - 1

Solve

x - 3 = 0 : x = 3

The solutions are

x = - 1, x = 3

x^{4} - 27 x^{2} + 50 = 0

x^{3} = x + 6

- x^{3} + x = 0

z^{4} = - 2 - 23 i

0 = x^{3} - x^{2} - 3 x + 3

What are the solutions to the equation -x^3+5x^2-3x-9=0 ?
The solutions to the equation -x^3+5x^2-3x-9=0 are x=-1,x=3
Find the zeros of -x^3+5x^2-3x-9=0
The zeros of -x^3+5x^2-3x-9=0 are x=-1,x=3