Solve 28 = 70f^4 - ScanMath

Evaluate

28 = 70 f^{4}

Swap the sides of the equation

70 f^{4} = 28

Divide both sides

\frac{70 f ^{4}}{70} = \frac{28}{70}

Divide the numbers

f^{4} = \frac{28}{70}

Cancel out the common factor 14

f^{4} = \frac{2}{5}

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

f = \pm 4 \frac{2}{5}

Simplify the expression

More Steps

f = \pm \frac{4 250}{5}

Separate the equation into 2 possible cases

f = \frac{4 250}{5} f = - \frac{4 250}{5}

Solution

f_{1} = - \frac{4 250}{5}, f_{2} = \frac{4 250}{5}

Alternative Form

f_{1} \approx - 0.795271, f_{2} \approx 0.795271

Solve the equation