What are the solutions to the equation -2x^2-18=0 ?

The solutions to the equation -2x^2-18=0 are x=3i,x=-3i

Find the zeros of -2x^2-18=0

The zeros of -2x^2-18=0 are x=3i,x=-3i

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- 2 x^{2} - 18 = 0

x = 3 i, x = - 3 i

Solution steps

- 2 x^{2} - 18 = 0

Move

18

to the right side

- 2 x^{2} = 18

Divide both sides by

- 2

x^{2} = - 9

For

x^{2} = f (a)

the solutions are

x = f (a), - f (a)

x = - 9, x = - - 9

- 9 = 3 i

- - 9 = - 3 i

x = 3 i, x = - 3 i

2 x + 7.43 = - 0.21 x^{2} - 0.84 x + 50

7 x^{2} = 3 - 5 x

n^{2} = 9 n

x^{2} + 3 5^{2} = 3 7^{2}

3 x^{2} + 30 = 0

What are the solutions to the equation -2x^2-18=0 ?
The solutions to the equation -2x^2-18=0 are x=3i,x=-3i
Find the zeros of -2x^2-18=0
The zeros of -2x^2-18=0 are x=3i,x=-3i