Ответ:
d²-15d+6d-90=d²-11d-90=(-0,14)²-11×(-0,14)-90=0,196+0,154-90=0,35-90=-89,65
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Ответ:
d²-15d+6d-90=d²-11d-90=(-0,14)²-11×(-0,14)-90=0,196+0,154-90=0,35-90=-89,65