The Quadratic Formula

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The greatest thing about mathematics, is that the information can almost never be outdated

KyokuiGhostASMR
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Thank you for your help! (This reeks of late 2000s qualities... I love it)

thatrecord
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Why don't you keep simplifying squareroot of 40 down to 2x5 which will be +or-2square root of 5

victorrdz
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to be honest i got lost when he simplify the equation, no idea how he come out the last equation.

heriberamos