xem trong sbt toan nhe ban trong do co 2 cau
lan giai va chi tiet nhe
4510 . 530
= 4510 . (53)10
= 4510 . 12510
= ( 45 . 125 )10
= 562510
= (752)10
= 7520 (đpcm)
=))
\(75^{20}=3^{20}\cdot25^{20}\)
\(=3^{20}\cdot\left(5^2\right)^{20}\)
\(=\left(3^2\right)^{10}\cdot5^{40}\)
\(=9^{10}\cdot5^{10}\cdot5^{30}\)
\(=45^{10}\cdot5^{30}\)