Respuesta:
[tex]f(x) = x2 + 2x + 3 \\ f(x) + {} {?} \: = x2 + 2x + {?} \: + 3 \\ f(x) + {?} \: = x2 + 2x + 1 + 3 \\ \\ f(x) + 1 = x2 + 2x + 1 + 3 \\ f(x) + 1 = (x + 1) { \: }^{2} \: + 3 \\ f(x) = (x + 1) {}^{2} \: + 3 - 1 \\ f(x) = (x + 1) {}^{2} \: + 2[/tex]
así me salió espero haberte ayudado
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Respuesta:
[tex]f(x) = x2 + 2x + 3 \\ f(x) + {} {?} \: = x2 + 2x + {?} \: + 3 \\ f(x) + {?} \: = x2 + 2x + 1 + 3 \\ \\ f(x) + 1 = x2 + 2x + 1 + 3 \\ f(x) + 1 = (x + 1) { \: }^{2} \: + 3 \\ f(x) = (x + 1) {}^{2} \: + 3 - 1 \\ f(x) = (x + 1) {}^{2} \: + 2[/tex]
así me salió espero haberte ayudado