Автор - Partyrty

5x(x-2)=<(x+1)²-10 решите срочно

Ответ

Автор - neloh25
5x(x - 2) leqslant ( x + 1) {}^{2} - 10
5x {}^{2} - 10x leqslant x {}^{2} + 2x + 1 - 10
5x {}^{2} - 10x - x {}^{2} - 2x - 1 + 10 leqslant 0
4x { }^{2} - 12x + 9 leqslant 0
4x {}^{2} - 12x + 9 = 0
[tex]d = b {}^{2} - 4ac = 144 - 4 times 4 times 9 =144-144=0
х =2

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