(3d)(3d)(d-7)=0

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Solution for (3d)(3d)(d-7)=0 equation:


Simplifying
(3d)(3d)(d + -7) = 0

Remove parenthesis around (3d)
3d(3d)(d + -7) = 0

Remove parenthesis around (3d)
3d * 3d(d + -7) = 0

Reorder the terms:
3d * 3d(-7 + d) = 0

Reorder the terms for easier multiplication:
3 * 3d * d(-7 + d) = 0

Multiply 3 * 3
9d * d(-7 + d) = 0

Multiply d * d
9d2(-7 + d) = 0
(-7 * 9d2 + d * 9d2) = 0
(-63d2 + 9d3) = 0

Solving
-63d2 + 9d3 = 0

Solving for variable 'd'.

Factor out the Greatest Common Factor (GCF), '9d2'.
9d2(-7 + d) = 0

Ignore the factor 9.

Subproblem 1

Set the factor 'd2' equal to zero and attempt to solve: Simplifying d2 = 0 Solving d2 = 0 Move all terms containing d to the left, all other terms to the right. Simplifying d2 = 0 Take the square root of each side: d = {0}

Subproblem 2

Set the factor '(-7 + d)' equal to zero and attempt to solve: Simplifying -7 + d = 0 Solving -7 + d = 0 Move all terms containing d to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + d = 0 + 7 Combine like terms: -7 + 7 = 0 0 + d = 0 + 7 d = 0 + 7 Combine like terms: 0 + 7 = 7 d = 7 Simplifying d = 7

Solution

d = {0, 7}

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