化简 3*(1/2)^2

解答

化简

3 \cdot (\frac{1}{2})^{2}

\frac{3}{4}

十进制

0.75

求解步骤

3 (\frac{1}{2})^{2}

使用指数法则:

(\frac{a}{b})^{c} = \frac{a ^{c}}{b ^{c}}

(\frac{1}{2})^{2} = \frac{1 ^{2}}{2 ^{2}}

= 3 \cdot \frac{1 ^{2}}{2 ^{2}}

1^{2} = 1

= 3 \cdot \frac{1}{2 ^{2}}

2^{2} = 4

= 3 \cdot \frac{1}{4}

3 \cdot \frac{1}{4} = \frac{3}{4}

= \frac{3}{4}

s im pl i f y 3448

2 x^{2} + x - 5 = 0

s im pl i f y \frac{12 !}{( 12 - 2 ) ! \cdot 2 !}

s im pl i f y \frac{- 1 + 5 i}{1 - i}

50 m^{2} - 5 m - 1 = 0