Question

(×+1)(×-2)=3 na equaçao de 2 grau​

Answer 1

Resposta:

$(x + 1)( x - 2) = 3 \\ = >( x + 1)x - (x + 1)2 = 3 \\ = > {x}^{2} + x - 2x - 2 \: \: \: \: \: \: \: = 3 \\ = > {x}^{2} - x - 2 \: \: = 3 \\ = > x^{2} - x = 3 + 2 \\ = > {x}^{2} - x = 5$