1.(5a-4b)(7a.3b) 2.4a(3a-3b+5c)
Matematika
sahid14
Pertanyaan
1.(5a-4b)(7a.3b)
2.4a(3a-3b+5c)
2.4a(3a-3b+5c)
1 Jawaban
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1. Jawaban ananekusuma2111
1)
(5a-4b)(7a.3b)
= (5a-4b)(21ab)
= 21ab.5a - 21ab.4b
= 105a²b - 84ab²
2)
4a(3a-3b+5c)
= 4a.3a-4a.3b+4a.5c
= 12a²-12ab+20ac