I need help with these polynomial questions.

First off, I want to check if I answered these question correctly:

1) 3x + 4y = 7xy

2) √x² + x² = X² (I learned that if I to get rid of an square root, then I need to root it. Also, If I need to get rid of a root, then I square root, correct? So, If I root the √x² it'd become a regular "X", and If square root the x² it'd become a regular "X" right? So, if this is the case X+X = x²?

3) ab³ - 1/ az(4squared) + 3 = a²z(4 squared)b³ + 2

Stuff I'm not sure how to work out:

1) a³ - 11 =?

2) 5np/n² - 2g/h = ?

3) √m-7

Question

I need help with these polynomial questions.

First off, I want  to check if I answered these question correctly:

1) 3x + 4y = 7xy

2)  √x² + x² = X² (I learned that if I to get rid of an square root, then  I need to root it. Also, If I need to get rid of a root, then I square root, correct? So, If I root the √x² it'd become a regular "X", and If square root the x² it'd become a regular "X" right? So, if this is the case X+X = x²?

3) ab³ - 1/ az(4squared) + 3 = a²z(4 squared)b³ + 2


Stuff I'm not sure how to work out:

1) a³ - 11 =?

2) 5np/n² - 2g/h = ?

3) √m-7

daffy_duck · Answer

are the things after the = sign your answer?

anonymous · Answer

yes

daffy_duck · Answer

Well the first one about the 3x+4y can't be added together because you can only add together like terms and x and y aren't the same so the answer is just the question :)

daffy_duck · Answer

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