-57
The numbers are: -25 and -30
15.268 and 18.732
4
The two numbers you are looking for are 49 and 10. When added together, 49 + 10 equals 59, and when multiplied, 49 × 10 equals 490.
-19
7.5516 and 70.4484 (approx)
-1
Let the number 'm' & 'n' Hence # Multiplication mn = - 1344 Added m + n = 43 We have two unknowns , So we eliminate one of them . Hence mn = -1344 m = 43 - n Substitute (43 - n) n = -1344 43n - n^(2) = -1344 n^(2) - 43n - 1344 = 0 We now have quadratic eq;n to solve Hence n = { --43 +/- sqrt[(-43)^(2) - 4(1)(-1344)]} / 2(1) n = { 43 +-/ sqrt[ 1849 + 5376]} / 2 n = { 43 +/-sqrt[ 7225] } / 2 n = { 43 +/- 85}/2 n = 128/2 = 64 & n = - 42/2 = -21 Verification 64 X -21 = -1344 64 - 21 = 43 So the two numbers are '-21' & '64'.
49
The numbers are 10 and 5.2
-9+4
2.4115 and 33.5885 (to 4 dp)