Proszę o pomoc potrzebne na jutro 1.Rozwiąż równania: a) (2x-5)^2=4x^2 b) (3x-4)(3x+4) - 5x^2=(5-2x)^2
a) (2x-5)^2=4x^2
4x²-20x+25=4x²
20x=25
x=1,25
b) (3x-4)(3x+4) - 5x^2=(5-2x)^2
9x²-16-5x²=25-20x+4x²
20x=25+16
20x=41
x=2,05
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a) (2x-5)^2=4x^2
4x²-20x+25=4x²
20x=25
x=1,25
b) (3x-4)(3x+4) - 5x^2=(5-2x)^2
9x²-16-5x²=25-20x+4x²
20x=25+16
20x=41
x=2,05