展开 (6x-4y=2) 3/2

解答

展开

(6 x - 4 y = 2) \frac{3}{2}

9 x - 6 y = 2

求解步骤

(6 x - 4 y = 2) \frac{3}{2}

= \frac{3}{2} (6 x - 4 \cdot 2 = y)

使用分配律:

a (b - c) = ab - a c

a = \frac{3}{2}, b = 6 x, c = 4 y = 2

\frac{3}{2} \cdot 6 x - \frac{3}{2} \cdot 4 y = 2

6 \cdot \frac{3}{2} x - 4 \cdot \frac{3}{2} y = 2

乘开

6 \cdot \frac{3}{2} x - 4 \cdot \frac{3}{2} y : 9 x - 6 y

9 x - 6 y = 2

e x p an d \frac{1}{2 x ( 8 + 5 ln ( x ) ) ^{10}}

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

e x p an d Q (- 3, 2) R (1, 2) S (1, - 4) T (- 3, - 4)

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

e x p an d \frac{( m - 2 ) ( 2 m - 1 )}{m ^{2} - 5}