plis pakek caranya soalnya buat besok ujian semester

jawab

kalikan akar sekawan

[tex] \lim_{x \to \ -7}\, \frac{x+7}{ \sqrt{x^2+5x-14} }\,= [/tex]

[tex]\lim_{x \to \ -7}\, \frac{(x+7)( \sqrt{x^2+5x-14} }{ \sqrt{x^2+5x-14} \sqrt{x^2+5x-14} }\,= [/tex]

[tex]lim_{x \to \ -7} \, \frac{(x+7)( \sqrt{x^2+5x-14} }{ {x^2+5x-14} }\,=[/tex]

[tex]lim_{x \to \ -7} \, \frac{(x+7)( \sqrt{x^2+5x-14} }{ {(x+7)(x-2)} }\,[/tex]

[tex] lim_{x \to \ -7} \, \frac{( \sqrt{x^2+5x-14} }{ {(x-2)} }\,[/tex]

[tex]lim_{x \to \ -7} \, \frac{( \sqrt{(-7)^2+5(-7)-14} }{ {(7-2)} }\,=\, \frac{0}{5}\,=\,0 [/tex]