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1b. 18x²+12x+2
1c. 64x+32x+4
a) -2(a+4b) = -2a -8b
b) (6x+2)(3x+1) = 18x+6x+6x+2 = 30x + 2
c) (8x+2)^2 = 8x^2 +2(8x.2) +2^2 = 64x^2 +32x +4