September 2018 1 26 Report

Zamień sumę na iloczyn:

a) 9x²- 30x+25=

b) 4a²-49=

c)8x ² - 2x ² - 2x=

d)14ab-21ac+18b ² - 27bc=

e) x (2a-3b) + 2x (2a-3b)=

I proszę o wyjaśnienie, bo nie umiem tego :/


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