bumblebee123
Junior Member
- Joined
- Jan 3, 2018
- Messages
- 200
Hello,
I wasn't sure which topic to post this one under so I went with Beginner Algebra I hope that's ok.
I wonder if someone can help. I have a question as follows:
a)Factorise 9x^2 -1
Which I factorize correctly as:
(3x+1)(3x-1)
The next question is
b) Hence express as a product of its prime factors
i)899
ii)8.99 x 10^4
I find answer i) 899 by literally dividing until I get to the answer 29x31
the answer for ii) from the book is:
2x2x5x5x29x31
Though I don't know how to get the answer myself.
My question is how do you get the answers topart b i and ii?
The fact it says 'hence' makes me feel like I should use the answer to part 'a'. However, despite playing with it, I don't know how to use it or even why it would relate.
I can't find the answer to part bii myself. How would you find the answer to part b ii?
Thank you in advance for your help
I wasn't sure which topic to post this one under so I went with Beginner Algebra I hope that's ok.
I wonder if someone can help. I have a question as follows:
a)Factorise 9x^2 -1
Which I factorize correctly as:
(3x+1)(3x-1)
The next question is
b) Hence express as a product of its prime factors
i)899
ii)8.99 x 10^4
I find answer i) 899 by literally dividing until I get to the answer 29x31
the answer for ii) from the book is:
2x2x5x5x29x31
Though I don't know how to get the answer myself.
My question is how do you get the answers topart b i and ii?
The fact it says 'hence' makes me feel like I should use the answer to part 'a'. However, despite playing with it, I don't know how to use it or even why it would relate.
I can't find the answer to part bii myself. How would you find the answer to part b ii?
Thank you in advance for your help