Zad. 1.Wykonaj działania
a) a + ( a - b )
b) 2x - ( x + 4 )
c) 7 - ( - x + 6 )
d) -(x+4)+(x-5)
e)1-(t+p)-(t-2)
f)-(-y+2)+(-2y-4)
Zad. 2 Zapisz w jak najprostszej postaci.
a) (a+b)-(2a-b)-(a-2b)
b) (9x-y+1)-(x+y)+(y-x)
c)-(kx+ny)-(3kx+2ny)+(5kx-3ny)
d)(2ab+a+3) - ( 3 ab-a+3)
e)(4x²-3x) - (x+0,1x²) - (x²-0,1x)
f) abc-(abc-(-xyz-(xyz-abc)))
g) s²t-(st²-(s²t-(st²-s²t)))
h) x²yz-(xy²z - xyz²-x²yz-xy²z)))
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Zad. 1.
a) a + ( a - b ) = a + a - b = 2a - b
b) 2x - ( x + 4 ) = 2x - x - 4 = x - 4
c) 7 - ( - x + 6 ) = 7 + x - 6 = x + 1
d) -(x+4)+(x-5) = -x - 4 + x - 5 =-9
e)1-(t+p)-(t-2)= 1 - t - p - t + 2 = -2t - p + 3
f)-(-y+2)+(-2y-4)= y - 2 - 2y - 4 = -y - 6
Zad. 2
a) (a+b)-(2a-b)-(a-2b)= a +b - 2a + b - a + 2b = -2a + 4b
b) (9x-y+1)-(x+y)+(y-x)= 9x - y + 1 - x - y + y - x = 7x -y + 1
c)-(kx+ny)-(3kx+2ny)+(5kx-3ny) = -kx - my - 3kx - 2my + 5kx - 3my = kx -6my
d)(2ab+a+3) - ( 3 ab-a+3)= 2ab + a + 3 - 3ab + a - 3 = -ab + 2a
e)(4x²-3x) - (x+0,1x²) - (x²-0,1x)= 4x² - 3x - x - 0,1x² - x² + 0,1x = -2,9x² - 3,9x
f) abc-(abc-(-xyz-(xyz-abc))) = abc - (abc-(-xyz-xyz+abc)) = abc - (abc -(-2xyz+abc))= abc - (abc + 2xyz - abc) = abc -2xyz
g) s²t-(st²-(s²t-(st²-s²t)))=s²t - (st²-(s²t-st² + s²t)) = s²t - (st² - ( st² -2s²t +st²) = s²t - (-st² + 2s²t)= s²t +st² - 2s²t = st² - s²t
h) x²yz-(xy²z - xyz²-x²yz-xy²z))) = x²yz-(xyz²-x²yz) = x²yz - xyz² + x²yz = 2x²yz -xyz²
zad.1
a)a+a-b=2a-b
b)2x-x-4=x-4
c)7+x-6=x+1
d)-x-4+x-5=-9
e)1-t-p-t+2=-p-2t+3
f)y-2-2y-4=-y-6
zad.2
a)a+b-2a+b-a+2b=-2a+4b
b)9x-y+1-x-y+y-x=7x-y+1
c)-kx-ny-3kx-2ny+5kx-3ny=kx-6ny
d)2ab+a+3-3ab+a-3=-ab+2a
e)4x^2-3x-x-0,1x^2-x^2+0,1x=2,9x^2-3,9x
f)abc-(abc-(-xyz-xyz-abc))=abc-(abc-(-2xyz-abc))=abc-(2abc+2xyz)=-abc-2xyz
g)s^2t-(st^2-(2s^2t-st^2))=s^2t-(2st^2-2s^2t)=-s^2t-2st^2
h)w tym podpunkcie nie dałeś nawiasów do tego większego więc nie wiem co mam opuszczać