化简 nCr(10.3)

解答

化简

n C r (10.3)

10.3 n C r

求解步骤

n C r (10.3)

使用法则:

(a) = a

(10.3) = 10.3

= n C r \cdot 10.3

= 10.3 n C r

f a c t or a^{3} b^{6} + c^{9}

f a c t or (x + 4) - x^{3} - 3 x^{2}

f a c t or \frac{a ^{2}}{4} - b^{2}

f a c t or 3 x - 9 y - x z + 3 yz

f a c t or (3 a)^{2} + 10 ab + (7 b)^{2}