Wykonaj odejmowanie sum algebraicznych :
a) (6x+1)-(4x-2)=
b) 23a-(12b-81a)-15b=
c) (11x-2y)-(3x-5y)=
d) (3x-2y+4z)-(x-4y-z)=
e) 21b²-(75b+12b²)-(24b-42b²)=f) -16,8+(8,7a-2,2)-(-5,4a-8,1)-13,2a= Wykonaj wskazane działania : a) 2x²-[6x²-(3x+x²)-(2x²-3x]=b) 2,6x-[1,8y-(2,2x-y)+1,4y]-(1,6x-0,2y)=c) 3x²-[(2x-x²)+(2x²-3x)]-(5x²+3)=
d) 2x²-[(x²-3x)-(8x²+8)]-(3x-14x²)=
e) (4x²-2x)-[(2x²+5x-5)-(x²+5x-4x)]=
f)3x²-[-5x+(4x²-7x)-(2x²-4x)]=
Dane są wyrażenia :
W(x)=2x(do potegi 3 ) -3x²+5x-1
Q(x)=6x-1+3x²
P(x)=2x²-3x+2
Uporządkuj : a) W(x)-[P(x)-Q(x)]b) W(x)-[-P(x)+Q(x)]c) W(x)-[Q(x)+P(X)] Prosze o pomoc daje 29 punktów :) Pozdrawiam" Life is not a problem to be solved but a reality to be experienced! "
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zad1
a) (6x+1)-(4x-2)=6x+1-4x+2=2x+3
b) 23a-(12b-81a)-15b=23a-12b+81a-15b=104a-27b
c) (11x-2y)-(3x-5y)=11x-2y-3x+5y=8x+3y
d) (3x-2y+4z)-(x-4y-z)=3x-2y+4z-x+4y+z=2x+2y+5z
e) 21b²-(75b+12b²)-(24b-42b²)=21b²-75b-12b²-24b+42b²=51b²-99b
f) -16,8+(8,7a-2,2)-(-5,4a-8,1)-13,2a=-16,8+8,7a-2,2+5,4a+8,1-13,2a=10,9+0,9a
zad2
a) 2x²-[6x²-(3x+x²)-(2x²-3x]=2x²-(6x²-3x-x²-2x²+3x)=2x²-6x²+3x+x²+2x²-3x=-2x²
b) 2,6x-[1,8y-(2,2x-y)+1,4y]-(1,6x-0,2y)=2,6x-(1,8y-2,2x+y+1,4y)-1,6x+0,2y=2,6x-1,8y+2,2x-y-1,4y-1,6x+0,2y=3,2x-4y
c) 3x²-[(2x-x²)+(2x²-3x)]-(5x²+3)=3x²-2x-x²+2x²-3x-5x-3=4x²-10x-3
d) 2x²-[(x²-3x)-(8x²+8)]-(3x-14x²)=2x²-x²-3x+8x²+8-3x+14x²=23x²-6x+8
e) (4x²-2x)-[(2x²+5x-5)-(x²+5x-4x)]=4x²-2x-2x²-5x+5+x²+5x-4x=3x²-6x+5
f)3x²-[-5x+(4x²-7x)-(2x²-4x)]=3x²-(-5x+4x²-7x-2x²+4x)=3x²+5x-4x²+7x+2x²-4x=x²+12x
zad3
W(x)=2x³-3x²+5x-1
Q(x)=6x-1+3x²
P(x)=2x²-3x+2
a) 2x³-3x²+5x-1-((2x²-3x+2)-(6x-1+3x²))=2x³-3x²+5x-1-(2x²-3x+2-6x+1-3x²)=2x³-3x²+5x-1-2x²+3x-2+6x-1+3x²=2x³-2x²+14x-4
b) 2x³-3x²+5x-1-(-(2x²-3x+2)+(6x-1+3x²))=2x³-3x²+5x-1-(2x²+3x-2+6x-1+3x²)=2x³-3x²+5x-1-2x²-3x+2-6x+1-3x²=2x³-8x²-4x+2
c) 2x³-3x²+5x-1-(6x-1+3x²+2x²-3x+2)=2x³-3x²+5x-1-6x+1-3x²-2x²+3x-2=2x³-8x²+2x-2
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