Add or subtract
(4x^2+15x-3)-(3x^2+5)
A. 7x^2+15x-8
B. x^2+12x+2
C. x^2+15x-8
D. 7x^2+8
Please help me. Thanks
7 answers
Do you know what like terms are?
No I don't know nothing about this stuff.
Like terms are terms that have the same degree (power)
so x^2 have the same degree. Combine the two by subtracting 4 and 3
The x's are a like term. Check if there are any like terms in the second equation
Same as above for the constants(-3 and 5)
(I would link to a better tutorial but I am not allowed to. Just look up adding and subtracting like terms on google )
(Hope I helped!)
so x^2 have the same degree. Combine the two by subtracting 4 and 3
The x's are a like term. Check if there are any like terms in the second equation
Same as above for the constants(-3 and 5)
(I would link to a better tutorial but I am not allowed to. Just look up adding and subtracting like terms on google )
(Hope I helped!)
The 4x^2 and 3x^2 are like terms. You can add or subtract like terms but not unlike terms. The 15x is a different terms than x^2 and has no other like term.
So 4x^2 - 3x^2 = x^2
+15x has nothing to add or subtract so it remains 15x.
-3 and -5 = -8
So 4x^2 - 3x^2 = x^2
+15x has nothing to add or subtract so it remains 15x.
-3 and -5 = -8
So then the answer is A??
No. DrBob just said in his post above that 4x^2 - 3x^2 = x^2
These are the screennames of our trusted math & science tutors: bobpursley, DrBob222, Reiny, MathMate, Steve, Ms. Sue, Damon, PsyDAG.
Any others who reply to your posts are other students ... and many are just guessing. Don't believe the guessers!
In addition, if you truly mean this -- "I don't know nothing about this stuff" -- you need to take a different class to prepare for this one. Why are you in this class if you aren't prepared?
Any others who reply to your posts are other students ... and many are just guessing. Don't believe the guessers!
In addition, if you truly mean this -- "I don't know nothing about this stuff" -- you need to take a different class to prepare for this one. Why are you in this class if you aren't prepared?