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FrankNatasha07
@FrankNatasha07
August 2022
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Решите уравнение 3х²+х+21=-5х и
-4/3 х²+27=0
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blueberries14
В первом уравнении3х² +х +21 +5х =03х² +6х +21 =0 |:3х² +2х +7=0D= 4 -4*7= –24<0Значит, нет корнейВо втором уравнении–4/3х² =27х² = 27:(–4/3)х² = 81/4х= 9/2 или х= –9/2
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