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2. = 25 - 2 - (-10) = 25 - 2 +10=33
3. = 12x² - 8x + 15x - 10 = 12x² +7x -10
4. = 12x² - 28x -15x +35 = 12x² - 43x + 35
5. = 2x(6) - 2(x+4) = 12x - 2x - 8 = 10x - 8
2. 25-2+10 = 33
3. 12x-8x+15x-10 = 19x-10
4. 12x-28x-15x+35 = -31x+35
5. 8x+4x-2x-4 = 10x-4