6x(x+2)=-42

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Solution for 6x(x+2)=-42 equation:


Simplifying
6x(x + 2) = -42

Reorder the terms:
6x(2 + x) = -42
(2 * 6x + x * 6x) = -42
(12x + 6x2) = -42

Solving
12x + 6x2 = -42

Solving for variable 'x'.

Reorder the terms:
42 + 12x + 6x2 = -42 + 42

Combine like terms: -42 + 42 = 0
42 + 12x + 6x2 = 0

Factor out the Greatest Common Factor (GCF), '6'.
6(7 + 2x + x2) = 0

Ignore the factor 6.

Subproblem 1

Set the factor '(7 + 2x + x2)' equal to zero and attempt to solve: Simplifying 7 + 2x + x2 = 0 Solving 7 + 2x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-7' to each side of the equation. 7 + 2x + -7 + x2 = 0 + -7 Reorder the terms: 7 + -7 + 2x + x2 = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 2x + x2 = 0 + -7 2x + x2 = 0 + -7 Combine like terms: 0 + -7 = -7 2x + x2 = -7 The x term is 2x. Take half its coefficient (1). Square it (1) and add it to both sides. Add '1' to each side of the equation. 2x + 1 + x2 = -7 + 1 Reorder the terms: 1 + 2x + x2 = -7 + 1 Combine like terms: -7 + 1 = -6 1 + 2x + x2 = -6 Factor a perfect square on the left side: (x + 1)(x + 1) = -6 Can't calculate square root of the right side. The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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