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Problemi Simili mit-Tiftix tal-Web

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\left(3p-2q\right)\left(3p+2q\right)
Erġa' ikteb 9p^{2}-4q^{2} bħala \left(3p\right)^{2}-\left(2q\right)^{2}. Id-differenza tal-kwadrati tista' tiġi fatturata billi tuża r-regola: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).