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2. 6x kuadrat + 8x
3. 20x kuadrat -40x
4. 20x kuadrat +50xy
5. x kuadrat +x +x+1 = x kuadrat +2x+1
6. (2x+1)(x-1)= 2x kuadrat -2x+x-1
7. 30x kuadrat -10xy-6xy+2y kuadrat
8. 10x-40
9. gak tahu maksud soalnya.
*mohon maaf jika salah
* jika Anda puas dengan jawaban saya, jadikan jawabanku sebagai jawaban yang terbaik oke:)
2. 2x(3x+4)=6x²+8x
3. 4x(5x-10)=20x²-40x
4. 5x(4x+10y)=20x²+50xy
5. (x+1)(x+1)=x²+x+x+1=x²+2x+1
6. (2x+1)(x-1)=2x²-2x+x-1=2x²-x-1
7. (5x-y) (6x-2y)=30x²-10xy-6xy+2y²=30x²-16xy+2y²
8. (5x-20)2=10x-40
9. (x²+2y)(x-5y)=x³-5x²y+2xy-10y²