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Answer:
-12[tex]p^{3}[/tex] + 28[tex]p^{2}q^{2}[/tex] + 8[tex]p^{2}[/tex] + 40pq
Step-by-step explanation:
Perimeter of rectangle = 2(l+b)
Let one side of rectangle be l and second be b.
Perimeter = 2*[(-6[tex]p^{3}[/tex]+7[tex]p^{2}q^{2}[/tex]+11pq) + (7[tex]p^{2}q^{2}[/tex] + 4[tex]p^{2}[/tex] + 9pq)]
= 2*(-6[tex]p^{3}[/tex] + 14[tex]p^{2}q^{2}[/tex] + 4[tex]p^{2}[/tex] + 20pq)
= -12[tex]p^{3}[/tex] + 28[tex]p^{2}q^{2}[/tex] + 8[tex]p^{2}[/tex] + 40pq Ans.
Hope it help. Please mark it as the brainliest....