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b. 12y kuadrat-2y+4
2). 6(2x+3)-3(x-2) = 12x+18-3x+6 = 9x+24
b(4y²-y+8)+(8y²-y-4)=12y²+4
2.6(2x+3)-3(x-2) =(12x+18)-(-3x+6)
=(12x+18)+(3x+6)=15x+24