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受欢迎的代数 >

化简 (2a+3c)/(2a+c)-(2b-3a)/(3a+b)-(2c(3a+b))/(6a^2+2ab+3ac+bc)

解答

化简

\frac{2 a + 3 c}{2 a + c} - \frac{2 b - 3 a}{3 a + b} - \frac{2 c ( 3 a + b )}{6 a ^{2} + 2 ab + 3 a c + b c}

解答

\frac{72 a ^{4} + 12 a ^{3} b + 72 a ^{3} c - 4 a ^{2} b ^{2} + 36 a ^{2} c ^{2} - c ^{2} b ^{2} - 18 c ^{2} a ^{2} + 12 a ^{2} c b - 4 a c b ^{2} + 3 a c ^{2} b}{( 2 a + c ) ( 3 a + b ) ( 6 a ^{2} + 2 ab + 3 a c + c b )}

求解步骤

\frac{2 a + 3 c}{2 a + c} - \frac{2 b - 3 a}{3 a + b} - \frac{2 c ( 3 a + b )}{6 a ^{2} + 2 ab + 3 a c + b c}

2 a + c, 3 a + b, 6 a^{2} + 2 ab + 3 a c + b c

的最小公倍数:

(2 a + c) (3 a + b) (6 a^{2} + 2 ab + 3 a c + c b)

根据最小公倍数调整分式

= \frac{( 2 a + 3 c ) ( 3 a + b ) ( 6 a ^{2} + 2 ab + 3 a c + c b )}{( 2 a + c ) ( 3 a + b ) ( 6 a ^{2} + 2 ab + 3 a c + c b )} - \frac{( 2 b - 3 a ) ( 2 a + c ) ( 6 a ^{2} + 2 ab + 3 a c + c b )}{( 2 a + c ) ( 3 a + b ) ( 6 a ^{2} + 2 ab + 3 a c + c b )} - \frac{2 c ( 2 a + c ) ( 3 a + b ) ^{2}}{( 2 a + c ) ( 3 a + b ) ( 6 a ^{2} + 2 ab + 3 a c + c b )}

使用分式法则:

\frac{a}{c} - \frac{b}{c} = \frac{a - b}{c}

= \frac{( 2 a + 3 c ) ( 3 a + b ) ( 6 a ^{2} + 2 ab + 3 a c + c b ) - ( 2 b - 3 a ) ( 2 a + c ) ( 6 a ^{2} + 2 ab + 3 a c + c b ) - 2 c ( 2 a + c ) ( 3 a + b ) ^{2}}{( 2 a + c ) ( 3 a + b ) ( 6 a ^{2} + 2 ab + 3 a c + c b )}

化简

(2 a + 3 c) (3 a + b) (6 a^{2} + 2 ab + 3 a c + c b) - (2 b - 3 a) (2 a + c) (6 a^{2} + 2 ab + 3 a c + c b) - 2 c (2 a + c) (3 a + b)^{2} : 72 a^{4} + 12 a^{3} b + 72 a^{3} c - 4 a^{2} b^{2} + 36 a^{2} c^{2} - c^{2} b^{2} - 18 c^{2} a^{2} + 12 a^{2} c b - 4 a c b^{2} + 3 a c^{2} b

= \frac{72 a ^{4} + 12 a ^{3} b + 72 a ^{3} c - 4 a ^{2} b ^{2} + 36 a ^{2} c ^{2} - c ^{2} b ^{2} - 18 c ^{2} a ^{2} + 12 a ^{2} c b - 4 a c b ^{2} + 3 a c ^{2} b}{( 2 a + c ) ( 3 a + b ) ( 6 a ^{2} + 2 ab + 3 a c + c b )}

流行的例子

3/5 r+1/5 r=-15+11

\frac{3}{5} r + \frac{1}{5} r = - 15 + 11

6 < 3 y + 15 \leq 18

化简-3(5/12)+2/5

s im pl i f y - 3 (\frac{5}{12}) + \frac{2}{5}

16 h^{2} - 8 h = 0

x^{2} + x + 2 = 0