Pertanyaan

x → ∞ l im 25 x 2 − 9 x − 6 − 5 x + 3

$x \to \infty l im 25 x^{2} - 9 x - 6 - 5 x + 3$

Y. Herlanda

Master Teacher

Mahasiswa/Alumni STKIP PGRI Jombang

Jawaban terverifikasi

Jawaban

jawaban yang benar adalah C.

Pembahasan

Oleh karena itu, jawaban yang benar adalah C.

$table attributes columnalign right center left columnspacing 0px end attributes row cell limit as x rightwards arrow infinity of square root of 25 x squared minus 9 x minus 6 end root minus 5 x plus 3 end cell equals cell limit as x rightwards arrow infinity of square root of 25 x squared minus 9 x minus 6 end root minus square root of open parentheses 5 x plus 3 close parentheses squared end root end cell row blank equals cell limit as x rightwards arrow infinity of square root of 25 x squared minus 9 x minus 6 end root minus square root of 25 x squared minus 30 x plus 9 end root end cell row blank blank cell rumus space cepat colon end cell row blank blank cell limit as x rightwards arrow infinity of square root of a x squared plus b x plus c end root minus square root of p x squared plus q x plus r end root end cell row cell fraction numerator b minus p over denominator 2 square root of a end fraction end cell equals cell fraction numerator negative 9 minus open parentheses negative 30 close parentheses over denominator 2 square root of 25 end fraction end cell row blank equals cell 21 over 10 end cell end table$

Oleh karena itu, jawaban yang benar adalah C.