Question

A T-shirt costs ₹ (x² - xy - y² ), a sweater costs ₹ (2x² + 8xy - 2y² ) and a saree costs ₹ (x² - 3xy + 4y² ). after buying these items Mohit paid ₹( 2x + y)² to the cashier. How much amount Mohit receive from the cashier?
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Answer 1

Answer:

zero

Step-by-step explanation:

${x}^{2} + 2 {x}^{2} + {x}^{2} - xy + 8xy - 3xy - {y}^{2} - 2 {y}^{2} + 4 {y}^{2} = 4 {x}^{2} + {y}^{2} + 4xy$

$4 {x}^{2} + 4xy + {y}^{2} = 4 {x}^{2} + {y}^{2} + 4xy$

hence he recieved nothing

Answer 2

x²+2x²+x²−xy+8xy−3xy−y²−2y²+4y²=4x²+y²+4xy

4 {x}^{2} + 4xy + {y}^{2} = 4 {x}^{2} + {y}^{2} + 4xy⁴x²+4xy+y²=4x²+y²+4xy

hope it helps you