化简 1/2 sqrt(12)-1/3 sqrt(18)+3/4 sqrt(48)+1/6 sqrt(72)

解答

化简

\frac{1}{2} 12 - \frac{1}{3} 18 + \frac{3}{4} 48 + \frac{1}{6} 72

43

十进制

6.92820 \dots

求解步骤

\frac{1}{2} 12 - \frac{1}{3} 18 + \frac{3}{4} 48 + \frac{1}{6} 72

\frac{1}{2} 12 = 3

\frac{1}{3} 18 = 2

\frac{3}{4} 48 = 33

\frac{1}{6} 72 = 2

= 3 - 2 + 33 + 2

f a c t or 2 a^{2} - 8 a

- x^{2} - 7 x - 12 \leq - 2

f a c t or 6^{n} + 2^{n}

s im pl i f y \frac{x ^{- 3}}{x ^{- 2}}

2 x^{2} - x > 10