Need help with this math problem:Simplify the expression. (-3m^8)(2m^9)(-5m^7) (^ means exponent so ^6 means the exponent is 6)?
回答 (3)
2017-05-08 6:12 pm
10*10*10= 10^3. This is the representation
2017-05-08 9:16 am
(-3m⁸)(2m⁹)(-5m⁷) = (-3)·2·(-5)·m⁸m⁹m⁷
= 30m⁸⁺⁹⁺⁷
= 30m²⁴
= 30m⁸⁺⁹⁺⁷
= 30m²⁴
2017-05-08 9:10 am
when you multiply numbers with exponents, you multiply the numbers together and add the exponents.
So (-3m^8)(2m^9) = -6m^17
(-6m^17)(-5m^7)=30m^24
So (-3m^8)(2m^9) = -6m^17
(-6m^17)(-5m^7)=30m^24
收錄日期: 2021-04-24 00:25:10
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170508005740AAN2IxI