展开 ((x-3)^5)/((y-1)^2)

解答

展开

\frac{( x - 3 ) ^{5}}{( y - 1 ) ^{2}}

\frac{x ^{5} - 15 x ^{4} + 90 x ^{3} - 270 x ^{2} + 405 x - 243}{y ^{2} - 2 y + 1}

求解步骤

\frac{( x - 3 ) ^{5}}{( y - 1 ) ^{2}}

(y - 1)^{2} = y^{2} - 2 y + 1

= \frac{( x - 3 ) ^{5}}{y ^{2} - 2 y + 1}

(x - 3)^{5} = x^{5} - 15 x^{4} + 90 x^{3} - 270 x^{2} + 405 x - 243

= \frac{x ^{5} - 15 x ^{4} + 90 x ^{3} - 270 x ^{2} + 405 x - 243}{y ^{2} - 2 y + 1}

e x p an d 4 a (2 a^{2} 3)

e x p an d \frac{3 ( 2 - k )}{2 ( L ^{2} k - 1 )}

e x p an d 30 e^{1.5} (5)

s im pl i f y n (8 - 4 n)

e x p an d \frac{2 x}{( x ^{2} + 11 ) ^{2}}