2 years ago

Find the solutions to x² = 20.

1 answer:

7 0

Answer:

$x = \pm2 \sqrt 5$

Step-by-step explanation:

$~~~~~~x^2=20\\\\\implies x = \pm\sqrt{20}\\\\\implies x = \pm \sqrt{ 4 \times 5}\\\\\implies x = \pm2 \sqrt 5$

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