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Matematyka 7

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4.3. Redukcja wyrazów podobnych<br />

167<br />

15<br />

3x + 3<br />

x<br />

1 18 35 18 18 18<br />

16 2 10<br />

6<br />

⋅ 19<br />

+ 6<br />

⋅ 19<br />

+ 19<br />

+ ⋅ 19<br />

<br />

CZY JUŻ POTRAFISZ?<br />

1 <br />

2<br />

− 3x<br />

+ 7x<br />

−12<br />

A. <br />

B. 3x x i <br />

C. 3x x<br />

D. <br />

( )<br />

7 2 5<br />

2 − ab⋅c⋅ − ca<br />

11<br />

7<br />

<br />

A. 5 3<br />

abc B. 5 3 2<br />

abc C. − 35 2<br />

abc D. 35 3<br />

abc<br />

11<br />

11<br />

77<br />

77<br />

3 <br />

<br />

A. 5x 2 + x + 7 + x 2 − x + 9 = 5x<br />

2 + 16<br />

2 2 2<br />

B. − 2x + 4x + 3x − x = − x + 3x<br />

2 2 2<br />

C. 5xy + x y + xy + 3yx − 2xy = 4xy + 4x y<br />

D. xy − y = x<br />

4 ••nej<br />

4x<br />

+ 8x<br />

− 2 + • + • + <br />

2<br />

2<br />

5x<br />

− 16x<br />

+ 2<br />

5 <br />

14ab − 2b + 9a + a − 10ab + 2b<br />

dla a = 3 i b = 05 ,

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