Solve -10^5=2*10^4V^2/60

$$- { 10 }^{ 5 } = 2 \times { 10 }^{ 4 } \frac{ { V }^{ 2 } }{ 60 }$$

Solve for V

$$V=-10\sqrt{3}i\approx -0-17.320508076i$$

$$V=10\sqrt{3}i\approx 17.320508076i$$

Steps by Finding Square Root

Multiply both sides of the equation by 60.

$$-60\times 10^{5}=2\times 10^{4}V^{2}$$

Calculate 10 to the power of 5 and get 100000.

$$-60\times 100000=2\times 10^{4}V^{2}$$

Multiply -60 and 100000 to get -6000000.

$$-6000000=2\times 10^{4}V^{2}$$

Calculate 10 to the power of 4 and get 10000.

$$-6000000=2\times 10000V^{2}$$

Multiply 2 and 10000 to get 20000.

$$-6000000=20000V^{2}$$

Swap sides so that all variable terms are on the left hand side.

$$20000V^{2}=-6000000$$

Divide both sides by 20000.

$$V^{2}=\frac{-6000000}{20000}$$

Divide -6000000 by 20000 to get -300.

$$V^{2}=-300$$

The equation is now solved.

$$V=10\sqrt{3}i V=-10\sqrt{3}i$$

Steps Using the Quadratic Formula

Multiply both sides of the equation by 60.

$$-60\times 10^{5}=2\times 10^{4}V^{2}$$

Calculate 10 to the power of 5 and get 100000.

$$-60\times 100000=2\times 10^{4}V^{2}$$

Multiply -60 and 100000 to get -6000000.

$$-6000000=2\times 10^{4}V^{2}$$

Calculate 10 to the power of 4 and get 10000.

$$-6000000=2\times 10000V^{2}$$

Multiply 2 and 10000 to get 20000.

$$-6000000=20000V^{2}$$

Swap sides so that all variable terms are on the left hand side.

$$20000V^{2}=-6000000$$

Add 6000000 to both sides.

$$20000V^{2}+6000000=0$$

This equation is in standard form: ax^{2}+bx+c=0. Substitute 20000 for a, 0 for b, and 6000000 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.

$$V=\frac{0±\sqrt{0^{2}-4\times 20000\times 6000000}}{2\times 20000}$$

Square 0.

$$V=\frac{0±\sqrt{-4\times 20000\times 6000000}}{2\times 20000}$$

Multiply -4 times 20000.

$$V=\frac{0±\sqrt{-80000\times 6000000}}{2\times 20000}$$

Multiply -80000 times 6000000.

$$V=\frac{0±\sqrt{-480000000000}}{2\times 20000}$$

Take the square root of -480000000000.

$$V=\frac{0±400000\sqrt{3}i}{2\times 20000}$$

Multiply 2 times 20000.

$$V=\frac{0±400000\sqrt{3}i}{40000}$$

Now solve the equation V=\frac{0±400000\sqrt{3}i}{40000} when ± is plus.

$$V=10\sqrt{3}i$$

Now solve the equation V=\frac{0±400000\sqrt{3}i}{40000} when ± is minus.

$$V=-10\sqrt{3}i$$

The equation is now solved.

$$V=10\sqrt{3}i V=-10\sqrt{3}i$$