Solve b-204-b-21-b^2

Evaluate

b - 204 - b - 21 - b^{2}

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

b - 204 - b - 21 - b^{2} = 0

Subtract the terms

More Steps

- 204 - 21 - b^{2} = 0

Subtract the numbers

- 225 - b^{2} = 0

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

- b^{2} = 0 + 225

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

- b^{2} = 225

Change the signs on both sides of the equation

b^{2} = - 225

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

b = \pm - 225

Simplify the expression

More Steps

b = \pm 15 i

Separate the equation into 2 possible cases

b = 15 i b = - 15 i

Solution

b_{1} = - 15 i, b_{2} = 15 i

Simplify the expression