September 2018 2 1K Report
Kurangkanlah!
a.-2x²+3x+4 dari 3x²-x-6
b.4(p²-q²) dari 8(2p²+2q²)
c.7(a²-3b²-1) dari 3a²-2b²
d.2a²+4b²-c² dari 3a²-2b²+3c²

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