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Question: x = 2y2 +3 if x = 53 what NEGATIVE value of y makes this an equality

Answer:

x= 2y2 + 3

53 = 2y2 + 3

53 - 3 = 2y2

50/2 = y2

25 = y2

Take the Square Root of Both sides so we can get:

y = Square root of 25

so:

y = EITHER 5 or -5

Then the ANSWER is -5 (since we need the NEGATIVE Value of Y)

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