Solve 2x x x-15=90

Evaluate

2 x \times x \times x - 15 = 90

Rewrite the expression in exponential form

2 x^{3} - 15 = 90

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

2 x^{3} = 90 + 15

Add the numbers

2 x^{3} = 105

Divide both sides

\frac{2 x ^{3}}{2} = \frac{105}{2}

Divide the numbers

x^{3} = \frac{105}{2}

Take the 3 -th root on both sides of the equation

3 x^{3} = 3 \frac{105}{2}

Calculate

x = 3 \frac{105}{2}

Solution

More Steps

x = \frac{3 420}{2}

Alternative Form

x \approx 3.744436

Solve the equation