CONVERT THE PERCENTAGES FRACTION 130%
2 answers:
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Answer:
x = ± 4
Step-by-step explanation:
Given
x² - 1 = 15 ( add 1 to both sides )
x² = 16 ( take the square root of both sides )
x = ± = ± 4
Depends on where you are in the math book but this would be the most simple way.
n= number
sqar(-1) = i
n= number
sqar(-1) = i