Algebra 1: 8th Grade
posted by Joy on .
Simplify each expression. Write your answers using positive exponents.
Check Answers Please:
1) 2^3*2^4 = 2^7
2)10^6/10^9 = 1/10^3
3)3^5*3^1 = 3^6
4)5^7*5^4 = 5^3
5)9^3/9^10 = 9^13
6) 4^11/4^8*4^2 = 4^5
7) a^2*a^3 = a^5
8)b^9/b^4 = 1/b^13
9)c^5*c^2 = 1/c^7
11)(5d^4)(8d^6) = 40d^10
These ones are the ones that I need help on.
10)a^6/4a^2
12) 7x^5/x^8
13) p^8q^3/p^6q
14)(5pq^3)(10p^3q^2)
15)3a^2b^5/9a^4b^4
PLEASE HELP ME! THIS IS SO HARD.

you did fine in the first 11
the others are not any more difficult
10) a^6/4a^2 = a^4/4
12) 7x^5/x^8 = 7x^13
13) p^8q^3/p^6q = p^2q^2 or (pq)^2
14) (5pq^3)(10p^3q^2) = p^4q/2
15) 3a^2b^5/9a^4b^4
you probably meant
3a^2b^5/(9a^4b^4)
= (a^6)b/3 or b/(3a^6) 
6) is wrong too (I didn't get any further).
6) 4^11/4^8*4^2 = 4^5
PEMDAS (Please excuse my dear aunt sally).
Parentheses
exponentiation
multiplication & division (left to right)
addition & subtraction (left to right)
Because multiplication and division have the same precedence (priority), they are performed left to right across the problem.
4^11/4^8*4^2
(4^11/4^8)*4^2
4^3 * 4^2 = 4^1 = 4 
Thats funny...im in 7th grade and im in algebra 1...anyway...why do u need help with this??? its simple exponents and division...