0
X x Y = -48 and X + Y =9
So X = 9 - Y then (9 - Y) x Y = -48
then -YxY + 9 x Y = -48 or YxY - 9 Y - 48 = 0 (rewritten)
Then use discriminant, Delta = (-9)x(-9) - 4 x 1 x -48 = 273
So
Y = (9 - sqrt(273)) / 2 and X = 9 - Y = 9 - ((9 - sqrt(273)) / 2
OR
Y = (9 + sqrt(273)) / 2 and X = 9 - Y = 9 - ((9 + sqrt(273)) / 2
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Earn +20 ptsQ: What two numbers when multiplied equal -48 but when added equal nine?
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What two numbers when added equal nine and when multiplied equal negative ninety?
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multiplied to seventy and add to nine is impossible, but add up to 9 and multiplied to -70, or add up to -9 and multiplied to 70 are possible. In that case, 14 and -5 would do it (or -14 and 5)
What is a number sequence comprising three consecutive numbers which when added till it becomes a single digit will always be equal to nine till infinity?
234,567,8910,.......upto infinity
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