(2x - y)(x + 3y) =

a. 2x2 + 5xy - 3y2
b. 2x2 + 7xy + 3y2
c. 2x2 - 7xy + 3y2
d. 2x2 + 7xy + 3x2
e. 2x2 + 2xy - 3y2

a. 2x2 + 5xy - 3y2

Mathematics

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