Question

(2x-3)² -4 (x-1) (x+1) +5?​

Answer 1

Resposta:

$(2x - 3) {}^{2} - 4(x - 1).(x + 1) + 5$

$4x {}^{2} - 12x + 9 - 4(x { }^{2} - 1) + 5$

$4x {}^{2} - 12x + 9 - 4x {}^{2} + 4 + 5$

$- 12x + 9 + 4 + 5$

$- 12x + 18$

Espero ter ajudado!!!