Решите квадратное уравнение
2x(5x-7)=2x (x vo vtoroi stepeni) - 5
10x^2-14x=2x^2-5
8x^2-14x+5=0
D=14²-4*5*8=196-160=36=6²
x12=(14+-6)/16= 20/16 8/16
x1=20/16=5/4
x2=8/16=1/2
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2x(5x-7)=2x (x vo vtoroi stepeni) - 5
10x^2-14x=2x^2-5
8x^2-14x+5=0
D=14²-4*5*8=196-160=36=6²
x12=(14+-6)/16= 20/16 8/16
x1=20/16=5/4
x2=8/16=1/2