Jawabanmu

2014-09-12T14:04:29+07:00
-3x²+18x+21 ÷ x²-10x+21 \frac{(-3x+3)(x-7)}{(x-7)(x-3)} = -3

x²+4x-12 ÷ 2x²+9x-18
(x+6)(x-2)/((2x-3)(x+6)) = (x-2)/(2x-3)

4 ÷ x+3 -5 ÷ x-1


 \frac{4}{x+3} -  \frac{5}{x-1} = \frac{4x-4 -5(x+3)}{(x+3)(x-1)} = \frac{-x-19}{(x+3)(x-1)}

mohon diperiksa lagi soalnya
soal nmr satunya harusnya -8 bukan -10 kak