5 and 10
5+5 By quadratic equation the two numbers (roots) are: 8.872983346 and 1.127016653 Added together = 10 Multiplied = 10
The two numbers are 6 and -5. 6 x (-5) = -30, 6 + (-5) = 1.
15
79
-41
8 and -8
Hard question
8 and 4, added together and multiplied by 7
2.929 and 17.071 (to 3 dp)
The two numbers that can be multiplied to get 20 and added to get -9 are -4 and -5. When multiplied, (-4 \times -5 = 20), and when added, (-4 + -5 = -9).
A number multiplied by itself added to itself equals 30. What are the two possible numbers?
511
5+5 By quadratic equation the two numbers (roots) are: 8.872983346 and 1.127016653 Added together = 10 Multiplied = 10
There are infinitely many answers. 1 and 325 (multiplied), or 1 and 324 (added) are two examples.
The two numbers are 6 and -5. 6 x (-5) = -30, 6 + (-5) = 1.
21 and 7
15