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2.(3p² - 4q) (2p² + 3q)= 6p pangkat 4 + 3p²q - 8p²q -12q²= 6p pangkat 4 - 5p²q - 12q²
.caranya dengan menyamakan variabel, m dengan m, n dengan n. . . .
= (3m + (-4m)) +(2n + (-2n)) + (3+5)
= -1m + 0n +8
=-m +8
2). (3p² - 4q)(2p² + 3q)
= (3p².2p²) + (3p².3q) + (-4q.2p²) + (-4q.3q)
=6p (pangkat 4) + 9p²q -8p²q -12q²
=6p (pangkat 4) + p²q -12q²
'_> semoga benar. , , ,