jika a=-3 b=5 dan c=-2 tentukan : A.3abc , B.2b-5c , C.4a-3b-2c , D.3a²b²-ac²
Matematika
ara517
Pertanyaan
jika a=-3 b=5 dan c=-2 tentukan : A.3abc , B.2b-5c , C.4a-3b-2c , D.3a²b²-ac²
1 Jawaban
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1. Jawaban Maia111
A) 3abc
=3(-3)(5)(-2)
=90
B) 2b-5c
=2(5)-5(-2)
=10+10
=20
C)4a-3b-2c
=4(-3)-3(5)-2(-2)
=-12-15+4
=-27+4
=-23
D) 3a²b²-ac²
=3(-3)²(5)²-(-3)(-2)²
=3(9)(25)-(-3)(4)
=675+12
=687