0=x^3+7x^2

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Solution for 0=x^3+7x^2 equation:


Simplifying
0 = x3 + 7x2

Reorder the terms:
0 = 7x2 + x3

Solving
0 = 7x2 + x3

Solving for variable 'x'.
Remove the zero:
-7x2 + -1x3 = 7x2 + x3 + -7x2 + -1x3

Reorder the terms:
-7x2 + -1x3 = 7x2 + -7x2 + x3 + -1x3

Combine like terms: 7x2 + -7x2 = 0
-7x2 + -1x3 = 0 + x3 + -1x3
-7x2 + -1x3 = x3 + -1x3

Combine like terms: x3 + -1x3 = 0
-7x2 + -1x3 = 0

Factor out the Greatest Common Factor (GCF), '-1x2'.
-1x2(7 + x) = 0

Ignore the factor -1.

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

Solution

x = {0, -7}

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