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b) 3(2x-3)-5(-3x+1)+5(-x+5)=6x-9+15x-5-5x+25=14x-14
c) 3x(x+2)-5(x²+3)= 3x²+6x-5x²-15=-2x²+6x-15
b) 3(2x-3)-5(-3x+1)+5(-x+5)= 6x-9+15x-5-5x+25 = 16x+11
c) 3x(x+2)-5(x²+3)= 3x²+6x-5x²-15 = -2x²-9
b)3(2x-3)-5(-3x+1)+5(-x+5)=6x-9+15x-5-5x+25=16x-39
c)3x(x+2)-5(x²+3)=3x²+6x-5x²-15=-2x²+6x-15