(x+1)(x^2+kx+4)=0

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Solution for (x+1)(x^2+kx+4)=0 equation:


Simplifying
(x + 1)(x2 + kx + 4) = 0

Reorder the terms:
(1 + x)(x2 + kx + 4) = 0

Reorder the terms:
(1 + x)(4 + kx + x2) = 0

Multiply (1 + x) * (4 + kx + x2)
(1(4 + kx + x2) + x(4 + kx + x2)) = 0
((4 * 1 + kx * 1 + x2 * 1) + x(4 + kx + x2)) = 0
((4 + 1kx + 1x2) + x(4 + kx + x2)) = 0
(4 + 1kx + 1x2 + (4 * x + kx * x + x2 * x)) = 0

Reorder the terms:
(4 + 1kx + 1x2 + (kx2 + 4x + x3)) = 0
(4 + 1kx + 1x2 + (kx2 + 4x + x3)) = 0

Reorder the terms:
(4 + 1kx + kx2 + 4x + 1x2 + x3) = 0
(4 + 1kx + kx2 + 4x + 1x2 + x3) = 0

Solving
4 + 1kx + kx2 + 4x + 1x2 + x3 = 0

Solving for variable 'k'.

Move all terms containing k to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + 1kx + kx2 + 4x + 1x2 + -4 + x3 = 0 + -4

Reorder the terms:
4 + -4 + 1kx + kx2 + 4x + 1x2 + x3 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 1kx + kx2 + 4x + 1x2 + x3 = 0 + -4
1kx + kx2 + 4x + 1x2 + x3 = 0 + -4

Combine like terms: 0 + -4 = -4
1kx + kx2 + 4x + 1x2 + x3 = -4

Add '-4x' to each side of the equation.
1kx + kx2 + 4x + 1x2 + -4x + x3 = -4 + -4x

Reorder the terms:
1kx + kx2 + 4x + -4x + 1x2 + x3 = -4 + -4x

Combine like terms: 4x + -4x = 0
1kx + kx2 + 0 + 1x2 + x3 = -4 + -4x
1kx + kx2 + 1x2 + x3 = -4 + -4x

Add '-1x2' to each side of the equation.
1kx + kx2 + 1x2 + -1x2 + x3 = -4 + -4x + -1x2

Combine like terms: 1x2 + -1x2 = 0
1kx + kx2 + 0 + x3 = -4 + -4x + -1x2
1kx + kx2 + x3 = -4 + -4x + -1x2

Add '-1x3' to each side of the equation.
1kx + kx2 + x3 + -1x3 = -4 + -4x + -1x2 + -1x3

Combine like terms: x3 + -1x3 = 0
1kx + kx2 + 0 = -4 + -4x + -1x2 + -1x3
1kx + kx2 = -4 + -4x + -1x2 + -1x3

Reorder the terms:
4 + 1kx + kx2 + 4x + x2 + x3 = -4 + -4x + -1x2 + -1x3 + 4 + 4x + x2 + x3

Reorder the terms:
4 + 1kx + kx2 + 4x + x2 + x3 = -4 + 4 + -4x + 4x + -1x2 + x2 + -1x3 + x3

Combine like terms: -4 + 4 = 0
4 + 1kx + kx2 + 4x + x2 + x3 = 0 + -4x + 4x + -1x2 + x2 + -1x3 + x3
4 + 1kx + kx2 + 4x + x2 + x3 = -4x + 4x + -1x2 + x2 + -1x3 + x3

Combine like terms: -4x + 4x = 0
4 + 1kx + kx2 + 4x + x2 + x3 = 0 + -1x2 + x2 + -1x3 + x3
4 + 1kx + kx2 + 4x + x2 + x3 = -1x2 + x2 + -1x3 + x3

Combine like terms: -1x2 + x2 = 0
4 + 1kx + kx2 + 4x + x2 + x3 = 0 + -1x3 + x3
4 + 1kx + kx2 + 4x + x2 + x3 = -1x3 + x3

Combine like terms: -1x3 + x3 = 0
4 + 1kx + kx2 + 4x + x2 + x3 = 0

The solution to this equation could not be determined.

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