Answer:
Step-by-step explanation:
hello :
(x + 5) ( x -3 )= x²-3x+5x-15
(x + 5) ( x -3 )= x²+2x-15
x² +2x - 15
(x + 5) ( x - 3 ) =
= x² + 5x - 3x - 15
= x² +2x - 15
