1.0.16x²-0.09y²z² 2.(a+2b)²-(a-2b)² 3.-4x² +(2x-3y) 4.16(x-1)²-9(x+2)²

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1.0.16x²-0.09y²z² 2.(a+2b)²-(a-2b)² 3.-4x² +(2x-3y) 4.16(x-1)²-9(x+2)²
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1.0.16x²-0.09y²z² 2.(a+2b)²-(a-2b)² 3.-4x² +(2x-3y) 4.16(x-1)²-9(x+2)²
1.0.16x²-0.09y²z² 2.(a+2b)²-(a-2b)² 3.-4x² +(2x-3y) 4.16(x-1)²-9(x+2)²

1.0.16x²-0.09y²z² 2.(a+2b)²-(a-2b)² 3.-4x² +(2x-3y) 4.16(x-1)²-9(x+2)²