a. 3x - [5x-(2x-1)] = 3x – (5x-2x+1) = 3x – (3x+1) = 3x -3x -1 = -1
b. 9m^2-(-1) * [ 7m^2-2m-(m^2-3m)] = 9m2 +1(7m2-2m-m2+3m) = 9m2 + 7m2-2m-m2+3m = 15m2+m
c.(2a^2-a+3) * (-4a) + 16a(a^2-0,5) = -8a3+4a2-12a+16a3-8a = 8a3+4a2-20a
d. ( 2x^2-5xy+4) * 2xy - 7xy = 4x3y -10x2y2+8xy-7xy = 4x3y -10x2y2+ xy
e. (-10x^3 + 5x^2 - 20x) : (5x)+1 = -2x3+5x -4 + 1 = -2x3+5x -3
zał. x ≠0
f. (-4x^2 + 12x^3y^2 - 16x^4y^3) : ( -4x^2) = 1 – 3xy2 + 4x2y3
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a. 3x - [5x-(2x-1)] = 3x – (5x-2x+1) = 3x – (3x+1) = 3x -3x -1 = -1
b. 9m^2-(-1) * [ 7m^2-2m-(m^2-3m)] = 9m2 +1(7m2-2m-m2+3m) = 9m2 + 7m2-2m-m2+3m = 15m2+m
c.(2a^2-a+3) * (-4a) + 16a(a^2-0,5) = -8a3+4a2-12a+16a3-8a = 8a3+4a2-20a
d. ( 2x^2-5xy+4) * 2xy - 7xy = 4x3y -10x2y2+8xy-7xy = 4x3y -10x2y2+ xy
e. (-10x^3 + 5x^2 - 20x) : (5x)+1 = -2x3+5x -4 + 1 = -2x3+5x -3
zał. x ≠0
f. (-4x^2 + 12x^3y^2 - 16x^4y^3) : ( -4x^2) = 1 – 3xy2 + 4x2y3
zał. x ≠0