((2r-7s) - (8s-r))(r-2s)
Matematika
pakar58
Pertanyaan
((2r-7s) - (8s-r))(r-2s)
1 Jawaban
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1. Jawaban hakimium
= ((2r-7s) - (8s-r))(r-2s)
= (2r - 7s - 8s + r)(r - 2s)
= (3r - 15s)(r - 2s)
= 3r(r - 2s) - 15s(r - 2s)
= 3r² - 6rs - 15rs + 30s²
= 3r² - 21rs + 30s²