展开 10(1+3b=-20)

解答

展开

10 (1 + 3 b = - 20)

10 + 30 b = - 200

求解步骤

10 (1 + 3 b = - 20)

= 10 (1 + 3 = b - 20)

打开括号

10 \cdot 1 + 10 \cdot 3 b = 10 (- 20)

使用加减运算法则

+ (- a) = - a

10 \cdot 1 + 10 \cdot 3 b = - 10 \cdot 20

化简

10 \cdot 1 + 10 \cdot 3 b = - 10 \cdot 20 : 10 + 30 b = - 200

10 + 30 b = - 200

e x p an d \frac{\partial}{\partial q} ((10 - p (q) - q) q) - 4 q

\frac{d}{d r ( T )} ((E (T, b)) (10 - 10 T \times b^{- 0.14 r (T)}))

e x p an d \frac{( 3 + 5 ) y}{2}

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

e x p an d \frac{x + 4}{( 3 x + 2 ) ( x - 8 )}