展开 A(3,-2)

解答

展开

A (3, - 2)

3 A, - 2 A

求解步骤

A (3, - 2)

= (3, - 2) A

使用分配律:

a (b - c) = ab - a c

a = A, b = 3,, c = 2

= A \cdot 3, - A \cdot 2

= 3 A, - 2 A

e x p an d A (3, - 1)

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

e x p an d \frac{6 x + 7}{( x + 2 ) ^{2}}

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

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