February 2019 0 18 Report
Sprawdź, które spośród liczb 3, -6, 9, -12 są pierwiastkami równania:

a) 3(1-x)-5=8-2(x-1)

b)  \frac{8x}{3}+35=59

c) \frac{1}{x} = \frac{1}{9}

d) (3-x) ^{2} =(x-2)(x+2)-5

e)  \frac{x+2}{4} + \frac{3-x}{3} = - \frac{x}{3} }

f)  \sqrt{x} = 3

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