展开 (n+2)/((n+3)^2)

解答

展开

\frac{n + 2}{( n + 3 ) ^{2}}

\frac{n + 2}{n ^{2} + 6 n + 9}

求解步骤

\frac{n + 2}{( n + 3 ) ^{2}}

(n + 3)^{2} = n^{2} + 6 n + 9

= \frac{n + 2}{n ^{2} + 6 n + 9}

e x p an d (7 x + 8 y = 29, 0) (5 x + 11 y = 2600)

e x p an d \frac{( 1 + x ) ^{2}}{100}

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

e x p an d \frac{( x + 3 ) ( x - 4 )}{x ( x - 2 ) ^{2}}

e x p an d - x (cos (ln (x)) - sin (ln (x)))