September 2018 1 47 Report

Wykonaj działania:

a) \frac{x-4}{x+3} * \frac{x^2-9}{x^2 - 16}

b) \frac{2x-2}{x^2+x-2 } / \frac{5x^2}{3x^2+6x}=

c) \frac{7}{1-x} -4 =

d)\frac{x}{x^2-4}-\frac{5x}{x^2 -4x+4}


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