Solve d^4-1-1 - ScanMath

Evaluate

d^{4} - 1 - 1

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

d^{4} - 1 - 1 = 0

Subtract the numbers

d^{4} - 2 = 0

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

d^{4} = 0 + 2

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

d^{4} = 2

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

d = \pm 42

Separate the equation into 2 possible cases

d = 42 d = - 42

Solution

d_{1} = - 42, d_{2} = 42

Alternative Form

d_{1} \approx - 1.189207, d_{2} \approx 1.189207

Simplify the expression