化简 4/7 (2/3)^2+8/9

解答

化简

\frac{4}{7} (\frac{2}{3})^{2} + \frac{8}{9}

\frac{8}{7}

十进制

1.14285 \dots

求解步骤

\frac{4}{7} (\frac{2}{3})^{2} + \frac{8}{9}

\frac{4}{7} (\frac{2}{3})^{2} = \frac{16}{63}

= \frac{16}{63} + \frac{8}{9}

\frac{16}{63} + \frac{8}{9} = \frac{8}{7}

= \frac{8}{7}

s im pl i f y \frac{a ^{3} \cdot b ^{4} \cdot 5 ^{4}}{b ^{2} \cdot 5}

s im pl i f y (y^{2})^{5} \cdot y^{8}

6 ∣ 5 x - 7 ∣ = 3

3 x - 10 = - 1

f a c t or 0.25 a^{6} b^{2} - 0.6 a^{4} b + 0.36 a^{2} b^{6}