add polynomials
(2a^4b^2+7a^2b^3)+(a^2b^3-2a^4-b^2)

Question

add polynomials
(2a^4b^2+7a^2b^3)+(a^2b^3-2a^4-b^2)

anonymous · Answer

k that is what I did

anonymous · Answer

mine are all gone

mathstudent55 · Answer

To add polynomials, you need to add "like terms" together. Like terms are terms that have exactly the same variable part. That means the variables (letters) and their powers have to be exactly the same. For example, 4x^5y and -6x^5y are like terms. 5x^2y and 7xy^2 are not like terms

mathstudent55 · Answer

First step, drop parenteses:
2a^4b^2 + 7a^2b^3 + a^2b^3 - 2a^4-b^2

anonymous · Answer

$$(2a ^{4}b ^{2}+7a ^{2}b ^{3})+(a ^{2}b ^{3}-2a ^{4}b ^{2})$$

mathstudent55 · Answer

Next step, move like terms together:
2a^4b^2 - 2a^4-b^2 + 7a^2b^3 + a^2b^3
Next step combine like terms by adding number parts and writing down the variable parts:
8a^2b^3

mathstudent55 · Answer

the 2a^4b^2 - 2a^4b^2 terms cancel each other. It's the same as 2 - 2 = 0

mathstudent55 · Answer

The answer is only 
8a^2b^3

mathstudent55 · Answer

Please fix the original question. I think you have an extra minus sign just before the last b^2

anonymous · Answer

that is what I came up with also, thanks so much for helping me I am going to post a new one know hold on please

mathstudent55 · Answer

ok, I'll look for it.