1. Oblicz...
(2a + 6b) + ( 9a + 4b)
(-3x do 2 potęgi +2x - 4) + (4x do 2 potęgi - 2x + 3)
(-a + 6b -1) + (-7a - 9b +1)
2. Oblicz...
(4a - 5b) - (-4x+ 3z)
8x + 4m - 8 - -5m + 8x - 2
3. Wykonaj odejmowanie
(a + b ) - (a+b)
(a+b) - (a-b)
(a-b)- (-a+b)
(a+b) - (-a+b)
(a+b)-(-a--b)
(a-b) - (-a-b)
(8x + 4m - 8) - (-5m + 8x -2)
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1)
(2a+6b)+(9a+4b)=2a+6b+9a+4b=11a+10b
(-3x^+2x-4)+(4x^-2x+3)=-3x^+2x-4+4x^-2x+3=x^-1
(-a+6b-1)+(-7a-9b+1)=-a+6b-1-7a-9b+1=-8a-3b
2)
(4a-5b)-(-4x+3z)=4a-5b+4x-3z
8x+4m-8-(-5m)+8x-2=16x+9m-10
3)
(a+b)-(a+b)=a+b-a-b=0
(a+b)-(a-b)=a+b-a+b=2b
(a-b)-(-a+b)=a-b+a-b=2a-2b
(a+b)-(-a+b)=a+b+a-b=2a
(a-b)-(-a-b)=a-b+a+b=2a
(8x+4m-8)-(-5m+8x-2)=8x+4m-8+5m-8x+2=9m-6
1. (2a+6b)+(9a+4b)=2a+6b+9a+4b=11a+10b
(-3x²+2x-4)+(4x²-2x+3)=-3x²+2x-4+4x²-2x+3=x²-1
(-a+6b-1)+(-7a-9b+1)=-a+6b-1-7a-9b+1=-6a-3b
2. (4a-5b)-(-4x+3z)=4a-5b+4x-3z
w nast. przykładzie masz jakiś błąd w zapisie
3. (a+b)-(a+b)=a+b-a-b=0
(a+b)-(a-b)=a+b-a+b=2b
(a-b)-(-a+b)=a-b+a-b=2a-2b
(a+b)-(-a+b)=a+b+a-b=2a
w nast, też jest błąd w zapisie
(a-b)-(-a-b)=a-b+a+b=2a
(8x+4m-8)-(-5m+8x-2)=8x+4m-8+5m-8x+2=9m-6