Question

solve : (5pq - 4q)² - (5p+4pq)²​

Answer 1

Answer:

80pq²

Step-by-step explanation:

(a-b)²-(a+b)²=4ab

let,a=5pq

b=4q

4ab=4(5pq)(4q)

(5pq - 4q)² - (5p+4pq)²=80pq²

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Answer 2

Answer:

$41p {}^{2} q {}^{2} - 16q {}^{2} + 25p {}^{2} + 40p {}^{2}q {}^{2}$