Respuesta:
21[tex]x^{2}[/tex]-7.4x+16 no se si estará bien :∨
Explicación paso a paso:
[tex]x^{2}[/tex] + 9x + 20; [tex]x^{2}[/tex] - 16, 4x + 1
21[tex]x^{2}[/tex] + 9x - 16.4x + 16
21[tex]x^{2}[/tex]- 7.4x + 16
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Respuesta:
21[tex]x^{2}[/tex]-7.4x+16 no se si estará bien :∨
Explicación paso a paso:
[tex]x^{2}[/tex] + 9x + 20; [tex]x^{2}[/tex] - 16, 4x + 1
21[tex]x^{2}[/tex] + 9x - 16.4x + 16
21[tex]x^{2}[/tex]- 7.4x + 16