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受欢迎的代数 >

化简 (a^2-4ac+3bc)/(a^2-ab+bc-ac)+(a+3b)/(b-a)+(a+2c)/(a-c)

解答

化简

\frac{a ^{2} - 4 a c + 3 b c}{a ^{2} - ab + b c - a c} + \frac{a + 3 b}{b - a} + \frac{a + 2 c}{a - c}

解答

\frac{- a ^{4} + 5 a ^{3} b - 4 a ^{2} b ^{2} + 2 a ^{3} c - a ^{2} c ^{2} - 3 b ^{2} c ^{2} - c ^{2} b ^{2} - 10 a ^{2} c b + 5 a c ^{2} b + 8 a c b ^{2}}{( b - a ) ( a - c ) ( a ^{2} - ab - a c + c b )}

求解步骤

\frac{a ^{2} - 4 a c + 3 b c}{a ^{2} - ab + b c - a c} + \frac{a + 3 b}{b - a} + \frac{a + 2 c}{a - c}

a^{2} - ab + b c - a c, b - a, a - c

的最小公倍数:

(b - a) (a - c) (a^{2} - ab - a c + c b)

根据最小公倍数调整分式

= \frac{( a ^{2} - 4 a c + 3 b c ) ( b - a ) ( a - c )}{( b - a ) ( a - c ) ( a ^{2} - ab - a c + c b )} + \frac{( a + 3 b ) ( a - c ) ( a ^{2} - ab - a c + c b )}{( b - a ) ( a - c ) ( a ^{2} - ab - a c + c b )} + \frac{( a + 2 c ) ( b - a ) ( a ^{2} - ab - a c + c b )}{( b - a ) ( a - c ) ( a ^{2} - ab - a c + c b )}

使用分式法则:

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

= \frac{( a ^{2} - 4 a c + 3 b c ) ( b - a ) ( a - c ) + ( a + 3 b ) ( a - c ) ( a ^{2} - ab - a c + c b ) + ( a + 2 c ) ( b - a ) ( a ^{2} - ab - a c + c b )}{( b - a ) ( a - c ) ( a ^{2} - ab - a c + c b )}

化简

(a^{2} - 4 a c + 3 b c) (b - a) (a - c) + (a + 3 b) (a - c) (a^{2} - ab - a c + c b) + (a + 2 c) (b - a) (a^{2} - ab - a c + c b) : - a^{4} + 5 a^{3} b - 4 a^{2} b^{2} + 2 a^{3} c - a^{2} c^{2} - 3 b^{2} c^{2} - c^{2} b^{2} - 10 a^{2} c b + 5 a c^{2} b + 8 a c b^{2}

= \frac{- a ^{4} + 5 a ^{3} b - 4 a ^{2} b ^{2} + 2 a ^{3} c - a ^{2} c ^{2} - 3 b ^{2} c ^{2} - c ^{2} b ^{2} - 10 a ^{2} c b + 5 a c ^{2} b + 8 a c b ^{2}}{( b - a ) ( a - c ) ( a ^{2} - ab - a c + c b )}

流行的例子

6 = \frac{a}{- 4}

s im pl i f y 1 0^{0}

化简 (4/5)(15/17)+(-3/5)(8/17)

s im pl i f y (\frac{4}{5}) (\frac{15}{17}) + (- \frac{3}{5}) (\frac{8}{17})

s im pl i f y (3.5)^{2}

5 x + 1 = 6 x + 9