Jawaban:
p-r+2q=(3i+2j)-(4i-5j)+2(-2i+j)
p-r+2q=3i-4i-4i+2j+5j+2j= -5i+9j
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Jawaban:
p-r+2q=(3i+2j)-(4i-5j)+2(-2i+j)
p-r+2q=3i-4i-4i+2j+5j+2j= -5i+9j