Решите неравенство (фото прикрепила). Created by likamalina1. algebra-ru

Решите неравенство (фото прикрепила)...

likamalina1 @likamalina1

September 2021 1 7 Report

Решите неравенство (фото прикрепила)

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mikael2

Verified answer

X²/3≥(3x+3)/4⇒4x²≥9x+9 ⇒ 4x²-9x-9≥0
D=81+4·4·9=81+144=225 √D=15
x1=(1/8)(9-15)=-6/8=-0,75 x2=(1/8)(9+15)=3
-------- -0,75---------- 3-------
+ - +
x∈(-∞;0,75]∨[3 ; ∞)

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