What are the solutions to the equation 3y^2-21=0 ?

The solutions to the equation 3y^2-21=0 are y=sqrt(7),y=-sqrt(7)

Find the zeros of 3y^2-21=0

The zeros of 3y^2-21=0 are y=sqrt(7),y=-sqrt(7)

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3 y^{2} - 21 = 0

y = 7, y = - 7

Decimal Notation

y = 2.64575 \dots, y = - 2.64575 \dots

Solution steps

3 y^{2} - 21 = 0

Move

21

to the right side

3 y^{2} = 21

Divide both sides by

3

y^{2} = 7

For

x^{2} = f (a)

the solutions are

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

y = 7, y = - 7

2 x + 1 = 23

4 x^{3} - 100 x

54 x^{3} + 250 y^{3}

- 4 < x \leq 6

6 - \frac{3}{2}

What are the solutions to the equation 3y^2-21=0 ?
The solutions to the equation 3y^2-21=0 are y=sqrt(7),y=-sqrt(7)
Find the zeros of 3y^2-21=0
The zeros of 3y^2-21=0 are y=sqrt(7),y=-sqrt(7)