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valentina19791
@valentina19791
August 2022
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(х+2)²<(2х-3)²-8(х-5) и ещё (х-2)²≤(2х+3)²-8(х+5)
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EnotiK111111
Второе:
x²-4x+4≤4x²+12x+9-8x-40;
4x²-x²+12x-8x+4x-40x+9-4≥0;
3x²+8x-35≥0;
D=64+4×3×35=484=22²;
x=-8±22/6;
x1=-7/3;
x2=5
0 votes
Thanks 1
EnotiK111111
по такому же принципу найди первое
valentina19791
спасибо
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Answers & Comments
x²-4x+4≤4x²+12x+9-8x-40;
4x²-x²+12x-8x+4x-40x+9-4≥0;
3x²+8x-35≥0;
D=64+4×3×35=484=22²;
x=-8±22/6;
x1=-7/3;
x2=5