展开 (2,3)y(6,-8)

解答

展开

(2, 3) y (6, - 8)

6 (2 \cdot 3,) y, - 8 (2 \cdot 3,) y

求解步骤

(2, 3) y (6, - 8)

= (2 \cdot 3,) (6, - 8) y

使用分配律:

a (b - c) = ab - a c

a = (2, 3) y, b = 6,, c = 8

= (2, 3) y \cdot 6, - (2, 3) y \cdot 8

= 6 (2 \cdot 3,) y, - 8 (2 \cdot 3,) y

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

e x p an d 10 (\frac{x ^{2}}{36100})

e x p an d A (- 3, - 1) B (5, 2)

e x p an d - \frac{( 6 x - 5 ) ( x - 6 )}{x - 5}

e x p an d \frac{6 s - 6}{( s ^{2} - 2 s + 10 ) ^{2}}