The degree of a polynomial 10x2+2xm y-4y is 3. What is the value of m.
A.1
B.2
C.3
D.4

Question

The degree of a polynomial 10x2+2xm y-4y is 3. What is the value of m. 
A.1 
B.2
C.3
D.4

mjdennis · Answer

It is way hard to understand your non-standard shorthand.
When you see $$x ^{2}$$ in an equation, 
you need to type 
x^2

allie2020 · Answer

10x^2+2x^m y-4y

mjdennis · Answer

Retype it so we all know what is going on in the second term.  If you need to use parenthesis, do so.$$x ^{2n+1}$$  should be x^(2n+1)

mjdennis · Answer

Got it

mjdennis · Answer

thanks

allie2020 · Answer

Would the answer be 2?

mjdennis · Answer

Degree of a polynomial is the power of the _highest_  term.
10x^2 is power 2
2x^m y is unknown right now
-4y is power one

So we have to work with 2x^m y

Can you say why you think it is "2" for the answer?

allie2020 · Answer

Dude forget it. I need the answer. Thanks for your help.

mjdennis · Answer

Probably not as much as you need to learn, and you're almost there, don't waste it.

x^m brings power 'm' to the term.  y brings 1.  m+1=3