October 2018 1 79 Report

zad 1 .wykonaj mnożenie i zredukuj wyrazy podobne :

1) x(5-y)+2-4xy

2) 3x+5y-(x-3)*(y+2)

3) 4x+3(x+y)-4(y-x)

4) -2(x-3y)+(4x-2)-(2-y)

5) 0,5(x+7y)-(0,5x+3)*(1+y)

6) (a+2+6) * (c+1)

7) 6x(x-2)*(4y+1)

8) 4(x-7)*(y-4x+2)

9) 2(x+y+z)*(2+x+3z)

10) -a(b+8)-4a+3ab

11) 4a(5+b)+20a-3ab

zad 2 . rozwiąż równanie

1) 3x(1+x)=3x^2 + 9

2) 2x(2-2x)=16-4x^2

3) -2(5x^2 +2)=5x(4-2x)

4)-7y(y-3)+y^2=-6y-63

duzo pkt dam naj odp.


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