waterboybee16 waterboybee16

28-04-2020
Mathematics

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What are the solutions of the equation x^2-1=15

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folarin7 folarin7

28-04-2020

Answer: x = +4 or -4

Step-by-step explanation:

x² - 1 = 15

x² = 15 + 1

x² = 16

Therefore, to solve for x we take the square root of both side

√x² = +/-√16

x² = +/-4

so, x = +4 or -4

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