展开 A(4,-2)yB(0,6)

解答

展开

A (4, - 2) y B (0, 6)

4 (0 \cdot 6,) A y B, - 2 (0 \cdot 6,) A y B

求解步骤

A (4, - 2) y B (0, 6)

= (4, - 2) (0 \cdot 6,) A y B

使用分配律:

a (b - c) = ab - a c

a = A y B (0, 6), b = 4,, c = 2

= A y B (0, 6) \cdot 4, - A y B (0, 6) \cdot 2

= 4 (0 \cdot 6,) A y B, - 2 (0 \cdot 6,) A y B

e x p an d \frac{d}{d x} ((160 - 24 x) (x - 4)) - 950

s im pl i f y (x_{0} + α x_{1})^{2}

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

e x p an d - \frac{9}{2} + \frac{14}{27}

e x p an d (3^{c o t h (x)} - tan (6 x))^{2}