Question

What method would you choose to solve the

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

Answer 1

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