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antoniya [11.8K]
2 years ago
11

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

Mathematics
1 answer:
lakkis [162]2 years ago
5 0

Answer:

x = 2\sqrt{2}, -2\sqrt{2}

Step-by-step 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 = \±\sqrt{8}

Expand

x = \±\sqrt{4*2}

This gives:

x = \±2\sqrt{2}

Split

x = 2\sqrt{2}, -2\sqrt{2}

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