Usuń nawiasy i wykonaj redukację wyrazów podobnych. a) 3x - 4 (y - 3x) b) 8 (-12x + y) + 12x c) 3 (a - 3b) - 4 (2b - 4x) d) -5 )4a - 3b) - 4 (5a - 5b) e) - 2x(x - 5y - 3) + 3x(x + 5y + 2) f) -3x(2x - 3y) + 2x(-3x - 5y - 1)
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a) 3x-4(y-3x) = 3x-4y+12x = 15x-4y
b) 8(-12x+y)+12x = -96x+8y+12x = -84x+8y
c) 3(a-3b)-4(2b-4x) = 3a-9b-8b+16x = 3a-17b+16x
d) -5(4a-3b)-4(5a-5b) = -20a+15b-20a+20b = -40a+35b
e) -2x(x-5y-3)+3x(x+5y+2) = -2x²+10xy+6x+3x²+15xy+6x = 5x²+12x+25xy
f) -3x(2x-3y)+2x(-3x-5y-1) = -6x²+9xy-6x²-10xy-2x = -xy -2x = -x(y+2)