Solve f^20042-1 - ScanMath

Evaluate

f^{2} \times 42 - 1

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

f^{2} \times 42 - 1 = 0

Use the commutative property to reorder the terms

42 f^{2} - 1 = 0

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

42 f^{2} = 0 + 1

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

42 f^{2} = 1

Divide both sides

\frac{42 f ^{2}}{42} = \frac{1}{42}

Divide the numbers

f^{2} = \frac{1}{42}

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

f = \pm \frac{1}{42}

Simplify the expression

More Steps

f = \pm \frac{42}{42}

Separate the equation into 2 possible cases

f = \frac{42}{42} f = - \frac{42}{42}

Solution

f_{1} = - \frac{42}{42}, f_{2} = \frac{42}{42}

Alternative Form

f_{1} \approx - 0.154303, f_{2} \approx 0.154303

Simplify the expression