The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. a) Find the algebraic expression for the total amount paid by him. b) Find the amount paid, if x = 10 and y = 5
a. ( x + y ) ( x - y ) ; amount = rs. 75
b. x^2 + 2xy + y^2 ; amount = rs 225 c. x^2 - 2xy + y^2 ; amount = rs 25
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