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Q: What are 3 numbers that when added equals 15 and when multiplied together equal 80?

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The numbers are: -25 and -30

4

15.268 and 18.732

-19

-1

7.5516 and 70.4484 (approx)

49

The numbers are 10 and 5.2

-9+4

2.4115 and 33.5885 (to 4 dp)

A number multiplied by itself added to itself equals 30. What are the two possible numbers?

-2

-32

4 - 4.898979*i and 4 + 4.898979*i (to 6 dp) where i is the imaginary square root of -1.

The numbers are: 10 and -4

23

The numbers are: 30 and -30

The numbers are: 3.51041215 and -20.51041215 A more accurate answer can be found by using the quadratic equation formula

313

-2 and -4 do that.

2+21=23 2*21=42 (* is another symbol for multiply)

4 and 15: 4 + 15 = 19 4 x 15 = 60

5

The complex conjugate pair -4 Â± 6.325i where i is the imaginary square root of -1.

-57