展开 2(-3x^2)

解答

展开

2 (- 3 x^{2})

- 6 x^{2}

求解步骤

2 (- 3 x^{2})

去除括号:

(- a) = - a

= - 2 \cdot 3 x^{2}

数字相乘:

2 \cdot 3 = 6

= - 6 x^{2}

e x p an d \frac{4 x ^{2} - 8 x + 4}{( x + 1 ) ^{2}}

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

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

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

e x p an d - 3 (x - 2 = 9 x + 16 - 4 x)