Question

(pq^2-qp^2)^2 with identity

Answer 1

Answer:

${( {pq}^{2} - {qp}^{2} ) }^{2} \\ {p}^{2} {q}^{4} + {q}^{2} {p}^{4} - 2 {p}^{3} {q}^{3}$

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Answer 2

Answer:

p^2q^4+q^2p^4+2p^3q^3

Step-by-step explanation:

Let a=pq^2 ,b=qp^2

(a-b)^2=a^2+b^2-2ab

(pq^2-qp^2)^2=(pq^2)^2+(qp^2)^2 + 2×pq^2 ×qp^2

=p^2q^4+q^2p^4+2p^3q^3

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