March 2019 0 21 Report
Co źle zrobiłam rozwiązując poniższe równanie?
4(x+1)^2 - 25=0
4(x+1)(x+1)-5^2=0
4(x+1-5)(x+1+5)=0/:4
(x-4)(x+6)=0
x=4 lub x=-6


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