Question

(x-1) .(x-2) =6 me ajudem​

Answer 1

$x {}^{2} - 2x - x + 2 = 6 \\ x {}^{2} - 3x + 2 = 6 \\ x {}^{2} - 3x + 2 - 6 = 0 \\ x {}^{2} + x - 4x - 4 = 0 \\ x \times (x + 1) - 4(x + 1) = 0 \\ (x + 1) \times (x - 4) = 0 \\ x + 1 = 0 \\ x - 4 = 0 \\ x {}^{1} = - 1 \\ x {}^{2} = 4$