7x^3=28x^2

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Solution for 7x^3=28x^2 equation:


Simplifying
7x3 = 28x2

Solving
7x3 = 28x2

Solving for variable 'x'.

Reorder the terms:
-28x2 + 7x3 = 28x2 + -28x2

Combine like terms: 28x2 + -28x2 = 0
-28x2 + 7x3 = 0

Factor out the Greatest Common Factor (GCF), '7x2'.
7x2(-4 + x) = 0

Ignore the factor 7.

Subproblem 1

Set the factor 'x2' equal to zero and attempt to solve: Simplifying x2 = 0 Solving x2 = 0 Move all terms containing x to the left, all other terms to the right. Simplifying x2 = 0 Take the square root of each side: x = {0}

Subproblem 2

Set the factor '(-4 + x)' equal to zero and attempt to solve: Simplifying -4 + x = 0 Solving -4 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + x = 0 + 4 Combine like terms: -4 + 4 = 0 0 + x = 0 + 4 x = 0 + 4 Combine like terms: 0 + 4 = 4 x = 4 Simplifying x = 4

Solution

x = {0, 4}

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