Đáp án:
a, . `( 2^4 - 4 ^2 )( 5^7 + 5^9 ) . (6^8 + 6^10 )`
`=( 5^7 + 5^9 ) . (6^8 + 6^10 ) . (16-16)`
`=( 5^7 + 5^9 ) . (6^8 + 6^10 ) .0`
`=0`
`b, (-2)^2 .3^2`
`=4.9`
`=36`
`c,(-4)^3 . (-4)^2 - 2^3`
`=(-4)^5-2^3`
`=(-2)^10-2^3`
`=-1032`
`d, 7^9 : (-7)^8`
`=7^9:7^8`
`=7`