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oblicz wartosc liczbowa wyrazenia

a.(2a - 3b)^2 - (2a +b) (2a - b) - 4b (2b - 3a) +a dla : a=2 ,b= pierwiastek z 2

b.(m - 3n) (m + 3n) +4m (m +2 n)- (2m+n) -4mn dla m= pierwiastek z 3 ,

n = pierwiastek z 2

c.( pierwiastek z 2 x -1) (pierwiastek z 2 x +1) - (pierwiastek z 2x -1 )^2 -

(x - pierwiastek z 2 )^2 +2 dla x = pierwiastek z 3


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