Question

help plz
$100x ^{2} + 20x - 1$
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Answer 1

=> 100x² + 20x - 1

=> a = 100, b = 20 , c = -1

x = -b ± √b² - 4ac / 2a

= -20 ± √400-400 / 2×100

= - 20/200

= -2/20

= - 1/10