Question

x^2 + (x+ 1)^2 + (x + 2)^2 = 77

Answer 1

Respuesta:

$x^2 + (x+ 1)^2 + (x + 2)^2 = 77$

$x^2 + ( x^2 + 2x + 1) + (x^2 + 4x + 4) = 77$

$3x^2 + 6x + 5 = 77$

$3x^2 + 6x -72 = 0$

Aspa simple: