( -2a² - 3a ) ( 5a² + 4a - 2 )
Matematika
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Pertanyaan
( -2a² - 3a ) ( 5a² + 4a - 2 )
1 Jawaban
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1. Jawaban Prastomo
=(-2a²-3a)(5a²+4a-2)
=(-2a²×5a²)+(-2a²×4a)+(-2a²×4)+(-3a×5a²)+(-3a×4a)+(-3a×-2)
=-10a⁴-8a³+4a²-15a³-12a²-6a
=-10a⁴+(-8a³-15a³)+(4a-12a²)-6a
=-10a⁴-23a³-8a²-6a