展开 ((4x+8)a)/(5(10+3a-a^2))

解答

展开

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

\frac{4 a x + 8 a}{50 + 15 a - 5 a ^{2}}

求解步骤

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

乘开

5 (10 + 3 a - a^{2}) : 50 + 15 a - 5 a^{2}

= \frac{a ( 4 x + 8 )}{50 + 15 a - 5 a ^{2}}

乘开

(4 x + 8) a : 4 a x + 8 a

= \frac{4 a x + 8 a}{50 + 15 a - 5 a ^{2}}

e x p an d (2 csc (x) - 9) (cot (x) - 2)

e x p an d \frac{12}{( x - 1 ) ( x + 1 )}

s im pl i f y (\frac{3}{x - 16} + 5 (100 - x)) (x - 16)

e x p an d \frac{4}{( x ^{2} - 1 ) ^{2}}

e x p an d \frac{x ( x + 3 ) ( x + 4 )}{3}