What are the solutions to the equation -2x^2=-42 ?

The solutions to the equation -2x^2=-42 are x=sqrt(21),x=-sqrt(21)

Find the zeros of -2x^2=-42

The zeros of -2x^2=-42 are x=sqrt(21),x=-sqrt(21)

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Popular >

- 2 x^{2} = - 42

x = 21, x = - 21

Decimal Notation

x = 4.58257 \dots, x = - 4.58257 \dots

Solution steps

- 2 x^{2} = - 42

Divide both sides by

- 2

x^{2} = 21

For

x^{2} = f (a)

the solutions are

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

x = 21, x = - 21

7 x^{2} + 14 x - 56 = 0

x^{2} = \frac{64}{81}

(2 x - 3)^{2} + 1 = 19

240 = w (4 w + 2)

x, x^{2} + 2 y^{2} - 4 x y = 0

What are the solutions to the equation -2x^2=-42 ?
The solutions to the equation -2x^2=-42 are x=sqrt(21),x=-sqrt(21)
Find the zeros of -2x^2=-42
The zeros of -2x^2=-42 are x=sqrt(21),x=-sqrt(21)