展开 A(10,-3)

解答

展开

A (10, - 3)

10 A, - 3 A

求解步骤

A (10, - 3)

= (10, - 3) A

使用分配律:

a (b - c) = ab - a c

a = A, b = 10,, c = 3

= A \cdot 10, - A \cdot 3

= 10 A, - 3 A

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

e x p an d f (g (3 x - 4))

e x p an d \frac{1}{( x - 1 ) ^{4}}

e x p an d y (1 + x^{2}) y^{'} (x) - x (1 + y^{2})

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