展开 (x^3-5x^2+1)^6

解答

展开

(x^{3} - 5 x^{2} + 1)^{6}

x^{18} - 30 x^{17} + 375 x^{16} - 2494 x^{15} + 9225 x^{14} - 17250 x^{13} + 8140 x^{12} + 18450 x^{11} - 16500 x^{10} - 7480 x^{9} + 9075 x^{8} + 1500 x^{7} - 2485 x^{6} - 150 x^{5} + 375 x^{4} + 6 x^{3} - 30 x^{2} + 1

求解步骤

(x^{3} - 5 x^{2} + 1)^{6}

(x^{3} - 5 x^{2} + 1)^{6} = (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1)

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

乘开

(x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) (x^{3} - 5 x^{2} + 1) : x^{18} - 30 x^{17} + 375 x^{16} - 2494 x^{15} + 9225 x^{14} - 17250 x^{13} + 8140 x^{12} + 18450 x^{11} - 16500 x^{10} - 7480 x^{9} + 9075 x^{8} + 1500 x^{7} - 2485 x^{6} - 150 x^{5} + 375 x^{4} + 6 x^{3} - 30 x^{2} + 1

= x^{18} - 30 x^{17} + 375 x^{16} - 2494 x^{15} + 9225 x^{14} - 17250 x^{13} + 8140 x^{12} + 18450 x^{11} - 16500 x^{10} - 7480 x^{9} + 9075 x^{8} + 1500 x^{7} - 2485 x^{6} - 150 x^{5} + 375 x^{4} + 6 x^{3} - 30 x^{2} + 1

e x p an d (a + m) 2^{^{'}}

e x p an d \frac{x - 8}{( x - 1 ) ( x - 2 )}

e x p an d e^{3} (t^{2} - 3 sin (t))

e x p an d \frac{9}{2 ( x + h ) - 1}

e x p an d (s - 3) (s + 2 = 5)