Penjelasan dengan langkah-langkah:
a)
b)
a.b = 1(-4)+(-2)(5) = -4-10 = -14
c)
a.b = 3(-7)+(-2)(1) = -21-2 = -23
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Penjelasan dengan langkah-langkah:
a)
b)
a.b = 1(-4)+(-2)(5) = -4-10 = -14
c)
a.b = 3(-7)+(-2)(1) = -21-2 = -23