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Mathematics 21 Online
OpenStudy (anonymous):

correct yes or no? im not asking for answers just if im right or wrong 1.(-x^2 y)^4 A: x^8 y^4 2.What will the exponent be when you simplify the following problem(p^3)^4 A; 12 3.(5x+7y)- (3x - 2y) A:2x + 5y 4.4x^2y^2 +2xy - 1 is an example of a binomial. 5.(2 b c^3)^2 (-3b) simplified A: -12 b^3 c^6 if there are wrong answers some advice to understand it please

OpenStudy (lgbasallote):

yes, yes, no, no, yes

OpenStudy (lgbasallote):

do you know where you went wrong??

OpenStudy (anonymous):

the binomial wrong one is a degree then?

OpenStudy (anonymous):

in binomial there are only two

OpenStudy (anonymous):

#3 you should look at the signs

OpenStudy (lgbasallote):

binomial means two terms...count the operating symbols..if there is one -> monomial..two -> binomial...three -> trinomial...four -> polynomial

OpenStudy (lgbasallote):

well actually all of them are called polynomial..no official term for four or more terms

OpenStudy (anonymous):

oooh theres three sorry i had only seen two

OpenStudy (lgbasallote):

what about #2? do you see your mistake?

OpenStudy (anonymous):

yeah i see the mistake just dont get it

OpenStudy (lgbasallote):

don't get it? what do you mean?

OpenStudy (anonymous):

maybe im not that lost lets see is the 2x part correct or no

OpenStudy (lgbasallote):

nope :p remember to distribute the negative sign ;D

OpenStudy (anonymous):

@lgbasallote sorry, (4x^2y^2 + 2xy - 1 is an example of a binomial) what do you mean by operating symbols, isn't there only 2? the + and the - ?

OpenStudy (anonymous):

does it start with 8x then if it does i am lost cus now im just guessing

OpenStudy (lgbasallote):

hmmm it's not a binomial..it was my explanation that wasd wrong i guess..lemme revise that..no operating symbol (+ or -) monomial...1 -> binomial..2-> trinomial..sorry bout that

OpenStudy (anonymous):

ahh i understand now :) thank you

OpenStudy (lgbasallote):

no @suzy4321 it does not start with 8x either =)) try typing your distibution here so i may see where you're going wrong

OpenStudy (anonymous):

(5x + 7y) - (3x - 2y) thats the original prob i figured it was 2x + 5y 7-5=2 3+2=5 the x 8 i told u i was guessing so thers no explanation

OpenStudy (lgbasallote):

hmmm..like i said distribute the negative symbol so... (5x+7y) - (3x - 2y) (5x + 7y - 3x - (-2y) ) (5x + 7y - 3x +2y) do you see the mistake now?

OpenStudy (anonymous):

ok yeah the -2 changed

OpenStudy (lgbasallote):

right! so you know the answer now right?

OpenStudy (anonymous):

right ! thank you lgb....

OpenStudy (lgbasallote):

<tips hat>

OpenStudy (anonymous):

jaja yeah good performance

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