Solve a^2 12a-86=5

Evaluate

a^{2} \times 12 a - 86 = 5

Multiply

More Steps

12 a^{3} - 86 = 5

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

12 a^{3} = 5 + 86

Add the numbers

12 a^{3} = 91

Divide both sides

\frac{12 a ^{3}}{12} = \frac{91}{12}

Divide the numbers

a^{3} = \frac{91}{12}

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

3 a^{3} = 3 \frac{91}{12}

Calculate

a = 3 \frac{91}{12}

Solution

More Steps

a = \frac{3 1638}{6}

Alternative Form

a \approx 1.964657

Solve the equation