9a pankat2-3ab+7b pankat2-12a pankat2-6ab-2b pankat2
Matematika
raodahamka
Pertanyaan
9a pankat2-3ab+7b pankat2-12a pankat2-6ab-2b pankat2
1 Jawaban
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1. Jawaban iamrimaa99
9a^2 - 3ab + 7b^2 - 12a^2 - 6ab - 2b^2
= (9a^2 - 12a^2) + (- 3ab - 6ab) + (7b^2 - 2b^2)
= - 3a^2 - 9ab + 5b^2