№88 1. 5х+3-2х+2х2=2х2- 7х+11
5х-2х+2х2-2х2+7х=-3-11
10х=-14
х=-14:10
х= -1,4
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№88 1. 5х+3-2х+2х2=2х2- 7х+11
5х-2х+2х2-2х2+7х=-3-11
10х=-14
х=-14:10
х= -1,4