need help with my arithmetic. finding exact solution | Mathematics | Page 1

wanton widget May 14, 2024, 1:20 PM

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main mistBOT May 14, 2024, 1:20 PM

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little island May 14, 2024, 1:25 PM

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its -5x² + 8x -3 = 0 right?

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@wanton widget

wanton widget May 14, 2024, 1:26 PM

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Yes

little island May 14, 2024, 1:26 PM

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so u can split it like

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-5x² + 5x + 3x -3 = 0

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then u can factories

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So after factoring ull get

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-5x( x -1) + 3( x -1) = 0

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then (-5x +3)(x-1) = 0

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or u can directly use the quadratic formula

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@wanton widget

fierce roost May 14, 2024, 1:29 PM

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there is an easier way to find them (if u don’t know this trick tho).

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Ye

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x1,x2=(-b+-sqrt(delta))/(2a)

fossil crypt May 14, 2024, 3:19 PM

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Just evaluate the equation? Not sure what this is asking lol

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Sqrt(124) is irrational, so it can’t be expressed as a fraction of integers

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The answer would include a root

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So one root would be at 8/10 + sqrt(124)/10

#need help with my arithmetic. finding exact solution