展开 |ax^2+(a+b)x-c|

解答

展开

a x^{2} + (a + b) x - c

a x^{2} + a x + b x - c

求解步骤

a x^{2} + (a + b) x - c

乘开

a x^{2} + (a + b) x - c : a x^{2} + a x + b x - c

= a x^{2} + a x + b x - c

e x p an d (3 - \frac{e ^{x}}{10})^{2}

e x p an d ((x, y) - (5, 2)) \cdot (- 3, 1)

e x p an d \frac{11 ( x - 24 )}{2}

e x p an d \frac{( 7 s - 1 )}{( s + 1 ) ( s + 2 ) ( s - 3 )}

e x p an d (2 x - 3 y) d x + x d y