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= (3p x 3p)+(3p x 2q) +(-2q x 3p) +(-2q x 2q)
= 9p² + 6pq - 6pq - 4q²
= 9p² - 4q²
= (3p * 2q) + (3p * 3p) + (-2q * 2q) + (-2q * 3p)
= 9p^2 + 6pq - 6pq - 4q^2
= 9p^2 - 4q^2
*
Jawaban => 2p^2 - 4q^2
[NB]
Hope it help.
Ingatlah berterimakasih jika merasa terbantu.
:)
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