Question

Rezolvati in Z ecuatia :
$x(x + 1) = {x}^{2} + 2x + 1$


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Answer 1

$x(x + 1) = {x}^{2} + 2x + 1 \\ {x}^{2} + x = {x}^{2} + 2x + 1 \\ {x}^{2} - {x}^{2} + x - 2x - 1 = 0 \\ - x - 1 = 0 \\ - x = 1 \\ x = - 1$

Sper că înțelegi rezolvarea

Answer 2

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

x^2 + x = x^2 + 2x + 1

x^2 + x - x^2 - 2x = 1

- x = 1

x = - 1