(1 - 3х) (х+2) =0
Раскрываем скобки :
х+2-3х^2-6х = 0
-3х^2 - 5х+2 =0
3x^2 +5x - 2=0
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(1 - 3х) (х+2) =0
Раскрываем скобки :
х+2-3х^2-6х = 0
-3х^2 - 5х+2 =0
3x^2 +5x - 2=0