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b) 2*(7x+5)-6(x-2)= 14x+10-6x+2=8x+12
c) -2x*(8-x)-5(x²+3x)= -16x+2x(kw)-5x(kw)-15x=-3x(kw)-21x
d) 5(3-2x)-(4x+6)*3= 15-10x-12x-18=-3-22x
kw - kwadrat
b) 2*(7x+5)-6(x-2)= 14x + 10 -6x + 12 = 8x +22
c) -2x*(8-x)-5(x²+3x)= -16x + 4x² - 5x² - 15x = -x² - 31x
d) 5(3-2x)-(4x+6)*3= 15 - 10x - 12x -18 = -22x - 3
b) 2*(7x+5)-6(x-2)=14x+10-6x+12=8x+22
c) -2x*(8-x)-5(x²+3x)=-16x+2x²-5x²-15x=-31x-3x²
d) 5(3-2x)-(4x+6)*3=15-10x-12x+18= 33-22x