展开 ((x-4)/2+y/1-2=0)2

解答

展开

(\frac{x - 4}{2} + \frac{y}{1} - 2 = 0) 2

x + 2 y - 8 = 0

求解步骤

(\frac{x - 4}{2} + \frac{y}{1} - 2 = 0) \cdot 2

= 2 (\frac{x - 4}{2} + \frac{y}{1} - 2 \cdot 0 =)

打开括号

= 2 \cdot \frac{x - 4}{2} + 2 \cdot \frac{y}{1} + 2 (- 2 = 0)

使用加减运算法则

+ (- a) = - a

2 \cdot \frac{x - 4}{2} + 2 \cdot \frac{y}{1} - 2 \cdot 2 = 0

乘开

2 \cdot \frac{x - 4}{2} + 2 \cdot \frac{y}{1} - 2 \cdot 2 : x + 2 y - 8

x + 2 y - 8 = 0

e x p an d \frac{x ^{2} + 81}{x ( x ^{2} + 9 ) ^{2}}

e x p an d (f \circ g) (\frac{x ^{2} + 4}{x} + x^{2})

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

e x p an d \frac{8 s ^{2} - 12 s + 48}{s ( s ^{2} + 16 )}

e x p an d s (p - 3 p - 50 eD (p) = 100 - 2 p)