October 2018 2 30 Report

1. Podane wyrażenie zapisz w postaci sumy.

a) (x-8)^{2}

b) (2x-7)^{2}

c) (4-x)^{2}

d) (2-2x)^{2}

e) (3x-6)^{2}

f) (3x-y){2}

2. Oblicz,korzystając ze wzoru na kwadrat różnicy.

a)39^{2}

b)78^{2}

c)109^{2}

d)699^{2}


w 1 zadaniu taki znaczek to ''x''


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