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Problemi Simili mit-Tiftix tal-Web

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\left(7v-11\right)\left(7v+11\right)
Erġa' ikteb 49v^{2}-121 bħala \left(7v\right)^{2}-11^{2}. Id-differenza tal-kwadrati tista' tiġi fatturata billi tuża r-regola: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right).