split the middle term of 16x square + 25 - 40 x
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Hi
Here is your answer
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Splitting middle terms....
16x² - 40x + 25 = 0
16x² - 20x - 20x + 25 = 0
4x ( 4x - 5) - 5 ( 4x - 5) = 0
(4x-5)(4x-5) = 0
4x = 5 , 4x = 5
x = 5/4 , 5/4
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Hope it helps U..... :)
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