Question

Quais são as raízes da equação 0,01x2-0,02x-0,03=0
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Answer 1

$0.01x^2-0.02x-0.03=0\\\\x^2-2x-3=0\\\\\Delta=4+12=16\\\\x=\dfrac{2\pm4}{2}\\\\\\x=3\ ou\ x=-1$