Question

10. Solve x² - 1 = 0.
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Answer 1

Answer:

x = +/- 1

Step-by-step explanation:

x² - 1 = 0

x² = 1

x = +/- √1

x = +/- 1

Answer 2

Answer:

solution=x2-1=0

x2=1

x=√1

here answer is x=1