lmday19 lmday19
  • 22-10-2019
  • Mathematics
contestada

the sum of two positive numbers is 4 and the sum of their squares is 28. what are the two numbers

Respuesta :

justhelpmeplease101 justhelpmeplease101
  • 22-10-2019

Answer:

Depends on what way you learnt it

Step-by-step explanation:

x + y = 4. x^2 + y^2 = 28. These are the given equations.

Square the first equation to get x^2 + 2xy + y^2 = 16.

Subtract the new equation from x^2 + y^2 = 28 to get 2xy = -12.

Divide by 2 to get xy = -6. The questions asks for positive numbers, and a positive times a positive is not a negative, therefore there are no two numbers.

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