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What method would you choose to solve the

method.
DONE
equation 2x2 - 7 = 9? Explain why you chose this

User Gjon
by
7.9k points

1 Answer

3 votes

Answer:

see explanation

Explanation:

2x² - 7 = 9 ( add 7 to both sides )

2x² = 16 ( divide both sides by 2 )

x² = 8 ( take square root of both sides )

x = ±
√(8) ← exact values

This method is useful when there are only numeric values to deal with

User Ben Olsen
by
7.6k points

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