ПОМОГИТЕ РЕШИТЬ НЕРАВЕНСТВА x^2 >2,3 х(х-5)-29>5(4-х). Created by knagina. algebra-ru

ПОМОГИТЕ РЕШИТЬ НЕРАВЕНСТВА x^2 >2,3 х(х-5)-29>5(4-х)...

March 2022 1 5 Report

ПОМОГИТЕ РЕШИТЬ НЕРАВЕНСТВА
x^2 >2,3

х(х-5)-29>5(4-х)

Answers & Comments

tamarabernukho х(х-5)-29>5(4-х)
x²-5x-29>20-5x
x²>49
x²-7²>0
(x-7)(x+7)>0

++++(-7)-------(7)++++
x∈(-∞;-7)U(7;+∞)

x^2 >2,3
x²-(√2.3)≥0
(x-√2.3)(x+√2.3)≥0

++++[-√2.3]-------[√2.3]+++++

x∈(-∞;-√2.3]U[√2.3;+∞)

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