Решите неравенство 2.60(2). Created by marina2837718. algebra-ru

Решите неравенство 2.60(2)...

marina2837718 @marina2837718

July 2022 1 7 Report

Решите неравенство 2.60(2)

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гюйс

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7х+14>(x+2)*7+3
7x+14>7x+14+3 - решений нет

(3х-1)² -5≤(3x-1)(3x+1)-6x
9x²-6x+1 -5≤9x²-1-6x
-3≤0
x=0

(2x+1)² -3(x-1)²≥(x+2)(x-2)+2(1+x??
4x²+4x+1 -3x²+6x-3≥x²-4+2+2x
8x≥0
x≥0
[0; ∞)

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