Exercise 4.5 I Question 1,2 I Mathematics 9 KPK Textbook board Peshawar

#Mathematics 9 #maths 9 #exercise 4.5 Question 1,2 Mathematics 9 KPK Textbook board Peshawar #use of formula (a+b)³ #use of formula (a-b)³ #how to use (a+b)³ #how to use (a-b)³ #(a+b)³=a³+3a²b+3ab²+b³ #(a-b)³=a³-3a²b+3ab²-b³ #(a-b)³=a³-3ab(a-b)-b³ #(a+b)³=a³+3ab(a+b)+b³