Bardzo prosiłabym o rozwiązania:)(x-3)(x+3)>2(x+1)²-(x-1)²Jaki procent liczby 7 stanowi liczba 2 Z GÓRY DZIĘKUJE :)
1. x²-9>2(x²+2x+1)-(x²-2x+1)
x²-9>2x²+4x+2-x²+2x-1
x²-2x²+x²-2x-4x>9+2-1
-6x>10/(-6)
x<-
2. 7,5-100%
2,625-x
x=100*2,625/7,5=35%
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1. x²-9>2(x²+2x+1)-(x²-2x+1)
x²-9>2x²+4x+2-x²+2x-1
x²-2x²+x²-2x-4x>9+2-1
-6x>10/(-6)
x<-
2. 7,5-100%
2,625-x
x=100*2,625/7,5=35%