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2x²+5x-3=0
x1,2 = -b±√b²-4ac / 2a
= -5±√5²-4.-6 / 2.2
= -5±√25+24 / 4
= -5±√49 / 4
= -5±7 / 4
x1 = -5+7 / 4
= 2 / 4
=½
x2 = -5-7 / 4
= -12 / 4
= -3
Jadi, HP {-3, ½}