Question 21196
X2 - 2x- 15 < 0    solve the inequality algebraically
X2 - 5X + 3X -15 <0
X(X-5)+3(X-5)<0
(X+3)(X-5)<0
FOR THE PRODUCT TO BE NEGATIVE ONE OF THE FACTORS SHOULD BE POSITIVE AND THE OTHER SHOULD BE NEGATIVE  HENCE X SHOULD BE BETWEEN -3 AND 5...SO THE DOMAIN OF X SHOULD BE 
............-3 < x < 5