Asked by julie
I need help with a couple of math problems.
subtract 5m^2+2m+9 from 7m^2-5m-8
simplify (m^4)^3(m^2)^9/(m^3)^2
subtract 5m^2+2m+9 from 7m^2-5m-8
simplify (m^4)^3(m^2)^9/(m^3)^2
Answers
Answered by
drwls
7m^2 -5m -8
5m^2 +2m +9
__________
2m^2 -7m -17
Just line up subtract the columns with different powers of m
(m^4)^3 (m^2)^9
______________
(m^3)^2
= m^12*m^18/m^6
= m^30/m^6
= ?
Just use the rules
x^a * x^b = x^(a+b)
x^a/x^b = x^(a-b)
(x^a)^b = x^(ab)
5m^2 +2m +9
__________
2m^2 -7m -17
Just line up subtract the columns with different powers of m
(m^4)^3 (m^2)^9
______________
(m^3)^2
= m^12*m^18/m^6
= m^30/m^6
= ?
Just use the rules
x^a * x^b = x^(a+b)
x^a/x^b = x^(a-b)
(x^a)^b = x^(ab)
Answered by
katherine
-1(m-4)2m=8
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