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ekaterinabragi
@ekaterinabragi
July 2022
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упростите выражение 9х в квадрате -(5х-1)(2х+3)
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TMarsel
9х^2-(5х-1)(2х+3)=9х^2-(10х^2-2х+15х-3)=
9х^2-10х^2+2х-15х+3=-х^2-13х+3
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9х^2-10х^2+2х-15х+3=-х^2-13х+3