What are the solutions to the equation n^3-n^2-16n-20=0 ?

The solutions to the equation n^3-n^2-16n-20=0 are n=-2,n=5

Find the zeros of n^3-n^2-16n-20=0

The zeros of n^3-n^2-16n-20=0 are n=-2,n=5

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n^{3} - n^{2} - 16 n - 20 = 0

n = - 2, n = 5

Solution steps

n^{3} - n^{2} - 16 n - 20 = 0

Factor

n^{3} - n^{2} - 16 n - 20 : (n + 2)^{2} (n - 5)

(n + 2)^{2} (n - 5) = 0

Using the Zero Factor Principle:

ab = 0

then

a = 0

b = 0

n + 2 = 0 or n - 5 = 0

Solve

n + 2 = 0 : n = - 2

Solve

n - 5 = 0 : n = 5

The solutions are

n = - 2, n = 5

x^{3} - 8 x^{2} - 15 = 0

(x - 1) \cdot x \cdot (x + 1) = 210

20 x^{3} + 100 x^{2} + 120 x = 0

(x^{2} + 8 x + 15)^{5} = 0

- x^{3} - 6 x^{2} + 124 x + 264 = 0

What are the solutions to the equation n^3-n^2-16n-20=0 ?
The solutions to the equation n^3-n^2-16n-20=0 are n=-2,n=5
Find the zeros of n^3-n^2-16n-20=0
The zeros of n^3-n^2-16n-20=0 are n=-2,n=5