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What two numbers add together to get 12 and when multiplied gets negative 72?
Wiki User
∙ 11y ago
a + b = 12 , so, b = 12 - a
ab = 72 , substitute
a(12 - a ) = 72
a2 -12a +72 = 0
a = (12 + sq rt (-144)) / 2 = 6 + 6i
b = 6 - 6i
Wiki User
∙ 11y ago
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