What are the solutions to the equation y^2-81=0 ?

The solutions to the equation y^2-81=0 are y=9,y=-9

Find the zeros of y^2-81=0

The zeros of y^2-81=0 are y=9,y=-9

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y^{2} - 81 = 0

y = 9, y = - 9

Solution steps

y^{2} - 81 = 0

Move

81

to the right side

y^{2} = 81

For

x^{2} = f (a)

the solutions are

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

y = 81, y = - 81

81 = 9

- 81 = - 9

y = 9, y = - 9

x^{4} + 3 x^{2} - 28

∣ 3 x + 5 ∣ = 1

9 u^{2} + 25 = 30 u

∣ x + 2 ∣ = ∣ 2 - x ∣

- 72 > 12 r

What are the solutions to the equation y^2-81=0 ?
The solutions to the equation y^2-81=0 are y=9,y=-9
Find the zeros of y^2-81=0
The zeros of y^2-81=0 are y=9,y=-9