WHY (X-5)(X+2) !
WELL X²-3X-10 IF YOU FACTORISE IT- X MULTIPLY X WILL
GIVE X² SO YOU WILL HAVE (X+ )(X+ )
SO THEN YOU HAVE -10 - MULTIPLE OF 10 CAN ONLY BE
10 AND 1 - OR 5 AND 2 -
IF YOU ADD -5 AND 2 IT WILL GIVE -3 THEREFORE -3X.
THERE IS YOUR ANSWER! (X-5)(X+2) THEREFORE X=5 X=-2