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2.28

2x2 - 5x + 1 = 0

by Quadratic Formula: x = (-b+√b2-4ac)/2a

a = 2

b = -5

c = 1

x = [-(-5) +√(-5)2 - 4(2)(1)]/2 (2)

= (5 + √25 - 8)/4

= (5 + √17)/4

= (5 +4.12)/4

= 2.28

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12y ago

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