What are the solutions to the equation 4z^2-100=-80 ?

The solutions to the equation 4z^2-100=-80 are z=sqrt(5),z=-sqrt(5)

Find the zeros of 4z^2-100=-80

The zeros of 4z^2-100=-80 are z=sqrt(5),z=-sqrt(5)

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4 z^{2} - 100 = - 80

z = 5, z = - 5

Decimal Notation

z = 2.23606 \dots, z = - 2.23606 \dots

Solution steps

4 z^{2} - 100 = - 80

Move

100

to the right side

4 z^{2} = 20

Divide both sides by

4

z^{2} = 5

For

x^{2} = f (a)

the solutions are

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

z = 5, z = - 5

x^{2} - 5 x + \frac{5}{4}

- \frac{1}{5} x^{2} + 20 = 0

8 x^{2} - 5 x - 3 = 0

x + 1 = 10 x^{2}

a, (a - b)^{2} = 0

What are the solutions to the equation 4z^2-100=-80 ?
The solutions to the equation 4z^2-100=-80 are z=sqrt(5),z=-sqrt(5)
Find the zeros of 4z^2-100=-80
The zeros of 4z^2-100=-80 are z=sqrt(5),z=-sqrt(5)