展开 162(3pi-4)

解答

展开

162 (3 π - 4)

486 π - 648

十进制

878.81402 \dots

求解步骤

162 (3 π - 4)

使用分配律:

a (b - c) = ab - a c

a = 162, b = 3 π, c = 4

= 162 \cdot 3 π - 162 \cdot 4

化简

162 \cdot 3 π - 162 \cdot 4 : 486 π - 648

= 486 π - 648

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

e x p an d (5, - 5, 4) \cdot (x, - x \frac{91}{105}, - x \frac{7}{3})

e x p an d 150 (e^{- 0.02 x} - 0.02 e^{- 0.02 x} x)

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

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