Question

Find the area of rectangle length and breath is 3x+y and 4y-x

Answer 1

Answer:

-3x2 + 2xy + 4y2

Step-by-step explanation:

Just multiply lengths and breadths

area

(3x+y)(4y-x)

3xy - 3x2 + 4y2 - xy

-3x2 + 2xy +4y2.

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