Solve -4=1/2u(-4)*2(1/2u)*2

Evaluate

- 4 = \frac{1}{2} u (- 4) \times 2 \times \frac{1}{2} u \times 2

Multiply

More Steps

- 4 = - 4 u^{2}

Swap the sides

- 4 u^{2} = - 4

Divide both sides

\frac{- 4 u ^{2}}{- 4} = \frac{- 4}{- 4}

Divide the numbers

u^{2} = 1

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

u = \pm 1

Simplify the expression

u = \pm 1

Separate the equation into 2 possible cases

u = 1 u = - 1

Solution

u_{1} = - 1, u_{2} = 1

Solve the quadratic equation