jaysonjayson jaysonjayson
  • 19-05-2021
  • Mathematics
contestada

if a number is added to it's square, the result is six. Find the number

Respuesta :

shootingstar15
shootingstar15 shootingstar15
  • 19-05-2021

Answer:

is the number 2?

Step-by-step explanation:

Answer Link
alexrupp6633 alexrupp6633
  • 19-05-2021

Answer:

The number could be  

1 1/2 or -2

explanation:

From the data, taking the number to be  x, we write:

2x^2 + x =6

Subtract 6 from both sides.

2x^2 + x - 6 = 0

Factorise.

2x^2 + 4x - 3x - 6 = 0

2x(x + 2) - 3(x + 2) = 0

(2x - 3)(x + 2) = 0

2x - 3 = 0 or x +2 = -2

x = 3/2 = 1 1/2 or x = -2

Answer Link

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