#)Giải :

c) \(\frac{45^{10}.5^{10}}{75^{10}}=\frac{\left(15.3\right)^{10}.5^{10}}{\left(15.5^{10}\right)}=\frac{15^{10}.3^{10}.5^{10}}{15^{10}.5^{10}}=3^{10}\)

\(F=\frac{\left(\frac{2}{5}\right)^7.5^7+\left(\frac{9}{4}\right)^9\div\left(\frac{3}{16}\right)^3}{2^7.5^2+512}\)

\(F=\frac{\left(\frac{2.5}{5}\right)^7+\left(\frac{9.16}{4.3}\right)^3}{2^7.5^2+2^9}=\frac{2^7+12^3}{2^7.5^2+2^9}=\frac{2^7+2^6.3^3}{2^7.5^2+2^9}=\frac{2^6.\left(2+3^3\right)}{2^7.\left(5^2+2^2\right)}=\frac{2^6.29}{2^7.29}\)

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

\(x^5+3=7.5\)

\(x^5+3=35\)

            \(x^5=35-3\)

            \(x^5=32\)

            \(x^5=2^5\)

         \(\Rightarrow x=2\)'

tk mình mình tk lại

2 nha bn

phai la\(\frac{4}{7.9}\)chu ban

112/305

địt mẹ mày

a) -175 - ( -7 . 5^2 + 4 . 2^3)

= -175 - ( -175 + 32 )

= -175 - -175 +32

= 0 +32

= 32

b) (-27) + 20 + (-9) + 27 + (-11)

= (-27 + 27 ) + 20 + (-11) + (- 9)

= 0 + 9 + (-9)

= 0 + 0

= 0

7 . 5x : (9 - 6\(\dfrac{13}{21}\)) = 2\(\dfrac{13}{25}\)

7 . 5x : 2\(\dfrac{8}{21}\) = 2\(\dfrac{13}{25}\)

7 . 5x = 2\(\dfrac{13}{25}\) . 2\(\dfrac{8}{21}\)

7 . 5x = 6

5x = 6 : 7

5x = 6 . \(\dfrac{1}{7}\)

5x = \(\dfrac{6}{7}\)