p⁴-13p²q²+4q⁴ = ?
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Step-by-step explanation:
p4+q4+p2q2
p4+q4+2(p2q2)-p2q2
(p2+q2)2 -(p2q2)2
(p2+q2)2-(pq)2
(p2+q2+pq)(p2+q2-pq)
Step-by-step explanation:
hope it helps dear
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