Question 5
What should be subtracted from 3x2−4y2+5xy+20 to obtain −x2−y2+6xy+20?
Find what the following equations become when the origin is shifted to the point(1,1)?(i) x2+xy−3y2−y+2=0(ii) xy−y2−x+y=0(iii) xy−x−y+1=0(iv) x2−y2−2x+2y=0