Toán Lớp 8: áhihf ưuhfu ưgfwehfgf qydw ygyw gyewgy ưegydqwgy ưegyfewy gydgwydg quưiudshj ngưeaksmhxgbwabmsgbwauyjsgwqe gưeuegdweudweg gưegfwegyweg ggwef ywe
\frac{2x+1}{x+4}+ \frac{4x}{x+2}
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Toán Lớp 8: áhihf ưuhfu ưgfwehfgf qydw ygyw gyewgy ưegydqwgy ưegyfewy gydgwydg quưiudshj ngưeaksmhxgbwabmsgbwauyjsgwqe gưeuegdweudweg gưegfwegyweg ggwef ywe
\frac{2x+1}{x+4}+ \frac{4x}{x+2}
Comments ( 2 )
= [ (2x+1)(x+2) / (x+2)(x+4)] + [ (4x)(x+4)/(x+4)(x+2)]
= 2x^2 + 5x +2 +4x^2 + 16x / (x+4)(x+2)
= 6x^2 +21x+2/ (x+4)(x+2)