展开 3x^2(3e^x+c)+3e^xx^3

解答

展开

3 x^{2} (3 e^{x} + c) + 3 e^{x} x^{3}

9 e^{x} x^{2} + 3 c x^{2} + 3 e^{x} x^{3}

求解步骤

3 x^{2} (3 e^{x} + c) + 3 e^{x} x^{3}

乘开

3 x^{2} (3 e^{x} + c) : 9 e^{x} x^{2} + 3 c x^{2}

= 9 e^{x} x^{2} + 3 c x^{2} + 3 e^{x} x^{3}

e x p an d \frac{1}{8} c^{9}

e x p an d \frac{2 x + 1}{3 x ( x + 2 )}

e x p an d \frac{G A ( GB - GC )}{1 - GB H A}

e x p an d \frac{( x - 1 ) ( x + 2 )}{x + 6}

e x p an d \frac{4}{3} π (x + 1)^{3}