1. Usuń nawiasy i wykonaj redukcję wyrazów podobnych:
a) (a+b)+(2a+b)=
b) 2x+(3y-2z)+(3z-2x)=
c) -5ab+(bc-2ab)+4cb=
d) (m+n)-(2m+3n)=
e) (3-4x do kwadratu +5x) -(-3x+5x do kwadratu +3)=
f) 9y-(2y+3x+2) +10y=
g) 8x-(4x+2)-3+3x=
h) (2a+b)-(3a+6b-1)+a+4b=
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a) (a+b)+(2a+b)= a + b + 2a + b = 3a + 2b
b) 2x+(3y-2z)+(3z-2x)= = 2x + 3y - 2z + 3z - 2x = 3y + z
c) -5ab+(bc-2ab)+4cb= = - 5ab + bc - 2ab + 4cb = -7ab + bc + 4cb = -7ab + 5bc
d) (m+n)-(2m+3n)= m + n - 2m - 3n = - m - 2n
e) (3-4x do kwadratu +5x) -(-3x+5x do kwadratu +3) = 3 - 4x² + 5x + 3x - 5x² - 3 = - 9x² + 8x
f) 9y-(2y+3x+2) +10y= 9y - 2y - 3x - 2 + 10y = 17y - 3x - 2
g) 8x-(4x+2)-3+3x = 8x - 4x - 2 - 3 + 3x = 7x - 5
h) (2a+b)-(3a+6b-1)+a+4b= 2a + b - 3a - 6b + 1 - a + 4b = - 2a - b + 1
a) (a+b)+(2a+b)= a+b +2a+b= 3a+2b
b) 2x+(3y-2z)+(3z-2x)=2x+3y-2z+3z-2x=3y+z
c) -5ab+(bc-2ab)+4cb= -5ab+bc-2ab+4cb= -7ab+bc+4cb
d) (m+n)-(2m+3n)=m+n-2m-3n=m-2n
e) (3-4x do kwadratu +5x) -(-3x+5x do kwadratu +3)= 3-4x do kwadratu +5x+3x-5x do kwadratu -3=-9x do kwadratu +8x
f) 9y-(2y+3x+2) +10y= 9y-2y-3x-2+10y=17y-3x-2
g) 8x-(4x+2)-3+3x=8x-4x-2-3+3x=7x-1
h) (2a+b)-(3a+6b-1)+a+4b=2a+b-3a-6b+1+a+4b=-b+1