What are the solutions to the equation 8z^2-72=0 ?

The solutions to the equation 8z^2-72=0 are z=3,z=-3

Find the zeros of 8z^2-72=0

The zeros of 8z^2-72=0 are z=3,z=-3

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8 z^{2} - 72 = 0

z = 3, z = - 3

Solution steps

8 z^{2} - 72 = 0

Move

72

to the right side

8 z^{2} = 72

Divide both sides by

8

z^{2} = 9

For

x^{2} = f (a)

the solutions are

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

z = 9, z = - 9

9 = 3

- 9 = - 3

z = 3, z = - 3

x, x^{2} + 2 x - 1 = 2

x^{2} = \frac{- b \pm b ^{2} - 4 a c}{2 a}

(3 w - 5) w = 28

t^{2} + 2 t + 6 = 7 t + 2

x^{2} - 16 x - 36 = 0

What are the solutions to the equation 8z^2-72=0 ?
The solutions to the equation 8z^2-72=0 are z=3,z=-3
Find the zeros of 8z^2-72=0
The zeros of 8z^2-72=0 are z=3,z=-3