化简 6-1/2 (4(x-3)^2)

解答

化简

6 - \frac{1}{2} (4 (x - 3)^{2})

- 2 x^{2} + 12 x - 12

求解步骤

6 - \frac{1}{2} (4 (x - 3)^{2})

去除括号:

(a) = a

= 6 - \frac{1}{2} \cdot 4 (x - 3)^{2}

\frac{1}{2} \cdot 4 (x - 3)^{2} = 2 (x - 3)^{2}

= 6 - 2 (x - 3)^{2}

(x - 3)^{2} : x^{2} - 6 x + 9

= 6 - 2 (x^{2} - 6 x + 9)

乘开

- 2 (x^{2} - 6 x + 9) : - 2 x^{2} + 12 x - 18

= 6 - 2 x^{2} + 12 x - 18

化简

6 - 2 x^{2} + 12 x - 18 : - 2 x^{2} + 12 x - 12

= - 2 x^{2} + 12 x - 12

s im pl i f y 0. 3^{12}

e x p an d (5 x + 4 y)^{3}

s im pl i f y - 0.5 lo g_{2} (0.5) - 0.5 lo g_{2} (0.5)

s im pl i f y \frac{- 4 \frac{1}{2}}{( - 1 \frac{3}{8} )}

s im pl i f y - \frac{1}{2} \cdot lo g_{2} (\frac{1}{2}) - \frac{1}{2} \cdot lo g_{2} (\frac{1}{2})