Question

B1 Tính :

a, ( \(\dfrac{-1}{3}\))^{2 . ( \(\dfrac{-1}{3}\))}

^{b, ( \(\dfrac{1}{7}\)})^{7 . 77 ( 7 mũ 7 nha )}

^{c, 8/4 ( 8 mũ 4 , 4 mũ 4 )}

^{d, 90/15 ( 90 mũ 3 , 15 mũ 3 )}

^{e, 2.3+2.3/10 ( 3 mũ 3, cả 2 số 3 đó ) còn 2 bên phải là mũ 3}

Answer 1

a) \(\dfrac{-1}{3}\cdot2\cdot\dfrac{-1}{3}=\left(\dfrac{-1}{3}\right)^2\cdot2=\dfrac{1}{9}\cdot2=\dfrac{2}{9}\)

c) \(\dfrac{8^4}{4^4}=\left(\dfrac{8}{4}\right)^4=2^4=16\)

d) \(\dfrac{90^3}{15^3}=\left(\dfrac{90}{15}\right)^3=6^3=216\)