[tex]x \geqslant 1[/tex]
[1,+infinito)
Respuesta:
D) [1, infinito)
Explicación paso a paso:
(2x-1)(2-x) + (1+2x)(x+3) >= 13
(4x - 2x2 - 2 + x)+(x + 3 + 2x2 + 6x) >=13
-2x2 + 5x - 2 + 2x2 + 7x + 3 >= 13
12x +1 >= 13
12x >= 12
x >= 12/12
x >= 1
[1, infinito)
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[tex]x \geqslant 1[/tex]
[1,+infinito)
Verified answer
Respuesta:
D) [1, infinito)
Explicación paso a paso:
(2x-1)(2-x) + (1+2x)(x+3) >= 13
(4x - 2x2 - 2 + x)+(x + 3 + 2x2 + 6x) >=13
-2x2 + 5x - 2 + 2x2 + 7x + 3 >= 13
12x +1 >= 13
12x >= 12
x >= 12/12
x >= 1
[1, infinito)