Math Is Fun Forum

Greaterpathmagician

Member

Registered: 2009-06-16

Posts: 32

calculations

How do you solve this things:

9a^2 b X3a^3b^4 , 8(4x)^0 , 6a^8 / a^2 and 10xy^10/20x^3y

Thank you

Last edited by Greaterpathmagician (2009-08-25 11:32:19)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: calculations

Hi Greaterpathmagician;

Last edited by bobbym (2009-08-25 23:14:12)

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

karney

Guest

Re: calculations

rule of number 1:  when you multiply with exponents add the powers (as long as the bases are the same)  ex:  9^2 X 9^4  =9^6

rule of number 2:  any base to a 0 power =1  so that problem turns out to be 8 X 1=8

rule for dividing with exponents:  as long as the bases are the same subtract the powers Ex:  10^5 / 10^3  = 10^2  (negative results go underneath the fraction bar)  Y^5 / Y^7 = 1/Y^2