展开 (3(x^2-4x+6))/(1+x)

解答

展开

\frac{3 ( x ^{2} - 4 x + 6 )}{1 + x}

\frac{3 x ^{2} - 12 x + 18}{1 + x}

求解步骤

\frac{3 ( x ^{2} - 4 x + 6 )}{1 + x}

乘开

3 (x^{2} - 4 x + 6) : 3 x^{2} - 12 x + 18

= \frac{3 x ^{2} - 12 x + 18}{1 + x}

e x p an d \frac{1}{3 ( t + 1 )}

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

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

e x p an d \frac{1}{y ( a + b y )}

e x p an d - \frac{5 ( 41 - 5 )}{7}