4200=(30)(x)(x+4)

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Solution for 4200=(30)(x)(x+4) equation:


Simplifying
4200 = (30)(x)(x + 4)

Reorder the terms:
4200 = 30x(4 + x)
4200 = (4 * 30x + x * 30x)
4200 = (120x + 30x2)

Solving
4200 = 120x + 30x2

Solving for variable 'x'.

Reorder the terms:
4200 + -120x + -30x2 = 120x + -120x + 30x2 + -30x2

Combine like terms: 120x + -120x = 0
4200 + -120x + -30x2 = 0 + 30x2 + -30x2
4200 + -120x + -30x2 = 30x2 + -30x2

Combine like terms: 30x2 + -30x2 = 0
4200 + -120x + -30x2 = 0

Factor out the Greatest Common Factor (GCF), '30'.
30(140 + -4x + -1x2) = 0

Factor a trinomial.
30((10 + -1x)(14 + x)) = 0

Ignore the factor 30.

Subproblem 1

Set the factor '(10 + -1x)' equal to zero and attempt to solve: Simplifying 10 + -1x = 0 Solving 10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1x = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1x = 0 + -10 -1x = 0 + -10 Combine like terms: 0 + -10 = -10 -1x = -10 Divide each side by '-1'. x = 10 Simplifying x = 10

Subproblem 2

Set the factor '(14 + x)' equal to zero and attempt to solve: Simplifying 14 + x = 0 Solving 14 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-14' to each side of the equation. 14 + -14 + x = 0 + -14 Combine like terms: 14 + -14 = 0 0 + x = 0 + -14 x = 0 + -14 Combine like terms: 0 + -14 = -14 x = -14 Simplifying x = -14

Solution

x = {10, -14}

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