Question

What are the solutions of the equation x2-1=15?

Answer 1

Answer:

${x}^{2} - 1 = 15 \\ {x}^{2} = 15 + 1 \\ {x}^{2} = 16 \\ x = \sqrt{16} \\ x = -4,+4$

Step-by-step explanation:

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Answer 2

Answer:

x=4, -4

Step-by-step explanation:

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