What are the solutions to the equation 3x^2=81-x^2 ?

The solutions to the equation 3x^2=81-x^2 are x= 9/2 ,x=-9/2

Find the zeros of 3x^2=81-x^2

The zeros of 3x^2=81-x^2 are x= 9/2 ,x=-9/2

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3 x^{2} = 81 - x^{2}

x = \frac{9}{2}, x = - \frac{9}{2}

Decimal Notation

x = 4.5, x = - 4.5

Solution steps

3 x^{2} = 81 - x^{2}

Move

x^{2}

to the left side

4 x^{2} = 81

Divide both sides by

4

x^{2} = \frac{81}{4}

For

x^{2} = f (a)

the solutions are

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

x = \frac{81}{4}, x = - \frac{81}{4}

\frac{81}{4} = \frac{9}{2}

- \frac{81}{4} = - \frac{9}{2}

x = \frac{9}{2}, x = - \frac{9}{2}

x^{2} - 7 x + 12 = 0

5^{2} + 8^{2} = x^{2}

x, f = 5 x^{2} + 4 x + 4 mn - 2

x, x^{2} + y^{2} + 2 x - 8 y + 25 = 0

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

What are the solutions to the equation 3x^2=81-x^2 ?
The solutions to the equation 3x^2=81-x^2 are x= 9/2 ,x=-9/2
Find the zeros of 3x^2=81-x^2
The zeros of 3x^2=81-x^2 are x= 9/2 ,x=-9/2