usuń nawiasy i wykonaj redukcję wyrazów podobnych
a) (5x+2y)-(-3x+4y)-6x
b)-(-3ab+8)+ (2-4ab)-(-7ab-12)
c)(6,5p+3q-2 1/2) -(7,1p - 2 1/3q-2,5)-(-0,6+1/3q-2,3)
d) -(-5a^2 +2,25a-9)+(-3-1 1/4a+0,1a^2)-(-12-7 1/10 a^2+1/2a)
/-to znaczy ułamek
^2 -to znaczy to kwadratu
jak by ktos nie wiedzial^.^
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a) (5x+2y)-(-3x+4y)-6x = 5x+2y+3x-4y-6x= 2x-2y
b)-(-3ab+8)+ (2-4ab)-(-7ab-12)= +3ab-8+2-4ab+7ab+12= 6ab+4
c)(6,5p+3q-2 1/2) -(7,1p - 2 1/3q-2,5)-(-0,6+1/3q-2,3) = 6,5p+3q-2,5-7,1p+ 2 1/3q+2,5+0,6-1/3q+2,3=-0,6p+5q+2,3
d) -(-5a^2 +2,25a-9)+(-3-1 1/4a+0,1a^2)-(-12-7 1/10 a^2+1/2a) = +5a^2-2,25a+9-3-1,25a+0,1a^2+12+7,1a^2-1/2a= 12,2a^2-4a+21