Solve a^3a-221 - ScanMath

Evaluate

a^{3} \times a - 221

To find the roots of the expression,set the expression equal to 0

a^{3} \times a - 221 = 0

Multiply the terms

More Steps

a^{4} - 221 = 0

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

a^{4} = 0 + 221

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

a^{4} = 221

Take the root of both sides of the equation and remember to use both positive and negative roots

a = \pm 4221

Separate the equation into 2 possible cases

a = 4221 a = - 4221

Solution

a_{1} = - 4221, a_{2} = 4221

Alternative Form

a_{1} \approx - 3.855654, a_{2} \approx 3.855654

Simplify the expression