2х (2х+3)-(х-3)^2=4х^2+6х-(х^2+6х+9)=4х^2+6х-х^2+6х-9=3х^2+12х-9
х=-1/3
3×1/9+12 (-1/3)-9=-12 2/3
Ответ:
Объяснение:
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Verified answer
2х (2х+3)-(х-3)^2=4х^2+6х-(х^2+6х+9)=4х^2+6х-х^2+6х-9=3х^2+12х-9
х=-1/3
3×1/9+12 (-1/3)-9=-12 2/3
Verified answer
Ответ:
Объяснение:
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