wykonaj proste zadanie ;p
a) 6(x-4)-2
b) 2(x+1)-3(x-1)
c) -3(y-2)+4(y+2)
d) 5(x-y-1)-4(x+2)
e) 2(3a+b)-2(a-b)
f) 1/2(4x-4)-2x
g) x(x-1)-3(x[do pot. 2]-x)
h) 5a(a-3)-3a(a-5)
i) 3x(x+1/3y)-2y(1/2x-1/2)
daje naj ;p
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a) 6(x-4)-2 = 6x-24-2=6x-26
b) 2(x+1)-3(x-1)=2x+2-3x+3= -1x+5=-x+5
c) -3(y-2)+2(y+2)= -3y+6+2y+4= -y+10
d) 5(x-y-1)-4(x+2)= 5x-5y-5-4x-8= x-5y-12
e) 2(3a+b)-2(a-b)= 6a+2b-2a+2b= 4a+4b
f) 1/2(4x-4)-2x= 2x-2-2x=-2
g) x(x-1)-2(x2-x)= x2-x-2x2-2x= -x(do potegi2)-2x
h) 5a(a-3)-3a(a-5) = 5a2-15a-3a2-15a= 2a(do potegi 2)
a) 6x - 24 - 2 = 6x - 26
b) 2x + 2 - 3x + 3 = - x + 5
c) -3y + 6 + 4y + 8 = y + 14
d) 5x - 5y - 5 - 4x - 8 = x - 5y - 13
e) 6a + 2b - 2a + 2b = 4a + 4b
f) 2x - 2 - 2x = - 2
g) x ² - x - 3x² + 3x = 2x - 2x²
h) 5a² - 15 - 3a² + 15 = 2a²
i) 3x² + xy - xy + y = 3x² + y
Skoro takie proste, to czemu sama go nie zrobisz? ;p