Solve x^3=-9x - ScanMath

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Type your math problem... x^3=-9x

x

Question

Solve the equation

x = 0

Evaluate

x^{3} = - 9 x

Move the expression to the left side

x^{3} - (- 9 x) = 0

Add or subtract both sides

x^{3} + 9 x = 0

Factor the expression

x (x^{2} + 9) = 0

Separate the equation into 2 possible cases

x = 0 x^{2} + 9 = 0

Solve the equation

More Steps

Evaluate

x^{2} + 9 = 0

Move the constant to the right-hand side and change its sign

x^{2} = 0 - 9

Removing 0 doesn't change the value,so remove it from the expression

x^{2} = - 9

Since the left-hand side is always positive or 0,and the right-hand side is always negative,the statement is false for any value of x

x \in / R

x = 0 x \in / R

Solution

x = 0

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