展开 A(4,6)B(0,-16)

解答

展开

A (4, 6) B (0, - 16)

0 \cdot (4 \cdot 6,) A B, - 16 (4 \cdot 6,) A B

求解步骤

A (4, 6) B (0, - 16)

= (4 \cdot 6,) (0, - 16) A B

使用分配律:

a (b - c) = ab - a c

a = A (4, 6) B, b = 0,, c = 16

= A (4, 6) B \cdot 0, - A (4, 6) B \cdot 16

= 0 \cdot (4 \cdot 6,) A B, - 16 (4 \cdot 6,) A B

s im pl i f y (4 - \frac{b}{c}) (\frac{b}{c} + 4)

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

e x p an d 3 i (3 - 6 i)^{2}

e x p an d \frac{4 ( x ^{2} - 4 x )}{( x - 2 ) ^{2}}

s im pl i f y (3 x - 2 y) (3 x - 32 y)