in an argand diagram the points a and b represent 1+7i and 4+3i respectively and o is the origin the quadrilateral oabc is a parallelogra find the complex numbler represented by point c
i set the gradients equal but that gives just one equation 4x+3y=0 same thing with the distances just one equation and dont know how to move from there
can i use the simple gradient method to this question or do i have to use another method to solve. this?