What are the solutions to the equation roots-x^3+6x^2+15x+8 ?

The solutions to the equation roots-x^3+6x^2+15x+8 are x=-1,x=8

Find the zeros of roots-x^3+6x^2+15x+8

The zeros of roots-x^3+6x^2+15x+8 are x=-1,x=8

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roots

- x^{3} + 6 x^{2} + 15 x + 8

x = - 1, x = 8

Solution steps

- x^{3} + 6 x^{2} + 15 x + 8

The roots are the intercepts with the x-axis

(y = 0)

- x^{3} + 6 x^{2} + 15 x + 8 = 0

Factor

- x^{3} + 6 x^{2} + 15 x + 8 : - (x + 1)^{2} (x - 8)

- (x + 1)^{2} (x - 8) = 0

Using the Zero Factor Principle:

ab = 0

then

a = 0

b = 0

x + 1 = 0 or x - 8 = 0

Solve

x + 1 = 0 : x = - 1

Solve

x - 8 = 0 : x = 8

The solutions are

x = - 1, x = 8

a^{3} + 5 a + 6 = 0

x^{5} - 243 = 0

x^{3} - 13 x^{2} + 23 x - 11 = 0

x^{3} + 2 x^{2} - 16 x - 32

x^{4} - 2 x^{3} + x^{2} + 12 x + 8 = 0

What are the solutions to the equation roots-x^3+6x^2+15x+8 ?
The solutions to the equation roots-x^3+6x^2+15x+8 are x=-1,x=8
Find the zeros of roots-x^3+6x^2+15x+8
The zeros of roots-x^3+6x^2+15x+8 are x=-1,x=8