Ответ:

C(-5; 4)

Объяснение:

DC = AB

[tex]AB_x = x_B - x_A = 2 - 4) = -2.[/tex]

[tex]DC_x = AB_x = -2.[/tex]

[tex]x_C = x_D + DC_x = -3 - 2 = -5.[/tex]

[tex]AB_y = y_B - y_A = 3 +5 = 8.[/tex]

[tex]DC_y = AB_y = 8.[/tex]

[tex]y_C = y_D + DC_y = -4 + 8 = 4.[/tex]