x*(0,25x-3)-(0,5+x)(0,5-x)=0
0,25x²-3x-(0,5²-x²)=0
0,25x²-3x-0,25+x²=0
1,25x²-3x-0,25=0 |×4
5x²-12x-1=0 D=164 √D=2√41
x₁=(1,2-0,2√41) x=(1,2+0,2√41).
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x*(0,25x-3)-(0,5+x)(0,5-x)=0
0,25x²-3x-(0,5²-x²)=0
0,25x²-3x-0,25+x²=0
1,25x²-3x-0,25=0 |×4
5x²-12x-1=0 D=164 √D=2√41
x₁=(1,2-0,2√41) x=(1,2+0,2√41).