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Use the square root method to find the solutions to the quadratic equation 22

- 80.
Write your answers separated by a comma. Make sure to simplify.

User Evangelist
by
8.1k points

1 Answer

6 votes

Answer:


x = 2√(2), -2√(2)

Explanation:

Given


x^2 - 8 = 0

Required

Solve

We have:


x^2 - 8 = 0

Add 8 to both sides


x^2 = 8

Take square roots of both sides


x = \±√(8)

Expand


x = \±√(4*2)

This gives:


x = \±2√(2)

Split


x = 2√(2), -2√(2)

User Frankie Liuzzi
by
8.6k points

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