Solve P^22-1 - ScanMath

Evaluate

P^{2} \times 2 - 1

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

P^{2} \times 2 - 1 = 0

Use the commutative property to reorder the terms

2 P^{2} - 1 = 0

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

2 P^{2} = 0 + 1

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

2 P^{2} = 1

Divide both sides

\frac{2 P ^{2}}{2} = \frac{1}{2}

Divide the numbers

P^{2} = \frac{1}{2}

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

P = \pm \frac{1}{2}

Simplify the expression

More Steps

P = \pm \frac{2}{2}

Separate the equation into 2 possible cases

P = \frac{2}{2} P = - \frac{2}{2}

Solution

P_{1} = - \frac{2}{2}, P_{2} = \frac{2}{2}

Alternative Form

P_{1} \approx - 0.707107, P_{2} \approx 0.707107

Simplify the expression