Question 697366
XY=1400
X=1400/Y
(X-3)(Y-3)=1175
XY-3Y-3X+9=1175
1400-3Y=3(1400/Y)=1175-9
1400-3Y=4200/Y=1166
-3Y-4200/Y=1166-1400
(-3Y*Y-4200)/Y=-234
-3Y^2-4200=-234Y
-3Y^2+234Y-4200=0
3Y^2-234Y+4200=0
3(Y^2-78Y+1400=0
3(Y-50)(Y-28)=1400
Y-50=0
Y=50 ANS. THEN X*50=1400 OR X=1400/50 OR X=28 ANS.
Y-28=0
Y=28 ANS. THEN X*28=1400 OR X=1400/28 OR X=50 ANS.
PROOF:
50*28=1400
1400=1400
(28-3)(50-3)=1175
25*47=1175
1175=1175