Using a change of variables, the double integral $\iint$_{R $\sqrt { ( x - y ) ( x + 4 y ) } d A$}where R is the region bounded by the quadrilateral with vertices (0, 0), (1, 1), (5, 0), and (4, -1) is A) $\frac { 100 } { 3 }$ B) $- \frac { 100 } { 7 }$ C) $\frac { 100 } { 7 }$ D) $\frac { 100 } { 9 }$ E) $- \frac { 100 } { 9 }$

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The Answer of Using a change of variables, the double integral $\iint$_{R $\sqrt { ( x - y ) ( x + 4 y ) } d A$}where R is the region bounded by the quadrilateral with vertices (0, 0), (1, 1), (5, 0), and (4, -1) is A) $\frac { 100 } { 3 }$ B) $- \frac { 100 } { 7 }$ C) $\frac { 100 } { 7 }$ D) $\frac { 100 } { 9 }$ E) $- \frac { 100 } { 9 }$

Using a Change of Variables, the Double Integral ∬\iint∬ R (x−y)(x+4y)dA\sqrt { ( x - y ) ( x + 4 y ) } d A(x−y)(x+4y)​dA

Using a Change of Variables, the Double Integral $\iint$ _{R $\sqrt { ( x - y ) ( x + 4 y ) } d A$}