SOLUTION: hi i have a final tommrow and i got a brain fart while studying im have troble solving simplify. 18n +(-9n)+4n+(-3n) 18n is squard as well as -3n a

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Question 84666: hi i have a final tommrow and i got a brain fart while studying
im have troble solving
simplify.

18n +(-9n)+4n+(-3n)
18n is squard as well as -3n
also if you dont mind
what is the expanded form of

(7x-8x+3)(5x-2)
7x is squard
thank you so much hope you can help me

Answer by vertciel(183) About Me  (Show Source):
You can put this solution on YOUR website!
Hello there,
18n^2 +(-9n)+4n+(-3n)^2 <-- Exponents can be denoted by the ^ symbol.
= 18n^2 - 5n - 3n^2
= 15n^2 - 5n
= 5n(3n - 1)

(7x-8x+3)(5x-2)
= 35x^2 - 14x - 40x + 16x + 15x - 6
I'll pass it onto you now.