What are the solutions to the equation -4x^2+84=4 ?

The solutions to the equation -4x^2+84=4 are x=2sqrt(5),x=-2sqrt(5)

Find the zeros of -4x^2+84=4

The zeros of -4x^2+84=4 are x=2sqrt(5),x=-2sqrt(5)

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- 4 x^{2} + 84 = 4

x = 25, x = - 25

Decimal Notation

x = 4.47213 \dots, x = - 4.47213 \dots

Solution steps

- 4 x^{2} + 84 = 4

Move

84

to the right side

- 4 x^{2} = - 80

Divide both sides by

- 4

x^{2} = 20

For

x^{2} = f (a)

the solutions are

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

x = 20, x = - 20

20 = 25

- 20 = - 25

x = 25, x = - 25

- X^{2} + 7 X - 10 = 0

x, - 12 x^{2} + 16 x = - 192

t^{2} + 20 t = 0

p^{2} - 3 p + 5 = 0

a, (a + b + c) (a + b - c) = 3 ab

What are the solutions to the equation -4x^2+84=4 ?
The solutions to the equation -4x^2+84=4 are x=2sqrt(5),x=-2sqrt(5)
Find the zeros of -4x^2+84=4
The zeros of -4x^2+84=4 are x=2sqrt(5),x=-2sqrt(5)