Posted by **Adriana** on Thursday, June 7, 2012 at 11:56am.

(7ab+4a2b4)+(a2b4-7ab)

The 2 and 4 are on top of the a and b. (sqare #)

- Math add the polynomials -
**MathMate**, Thursday, June 7, 2012 at 12:09pm
You need to find the like terms, for example, a²b^{4} and 4a²b^{4} are like terms.

You can add them together to make 5a²b^{4}.

So

a²b^{4}+4a²b^{4}=5a²b^{4}

Like terms must have the same variables each raised to the same power. We can add like terms by adding the coefficients, as we did above.

- Math add the polynomials -
**Adriana**, Thursday, June 7, 2012 at 12:20pm
ahh so the 7ab cancels because of the -7ab so answer is 5a²b4. I thought it was 4a4b8

Thank you

- Math add the polynomials -
**Damon**, Thursday, June 7, 2012 at 12:22pm
yes 7 a b - 7 a b = 0

and the answer is

5 a^2 b^4

- To Adriana: -
**MathMate**, Thursday, June 7, 2012 at 12:46pm
Your answer is correct.

- Math add the polynomials -
**Adriana**, Thursday, June 7, 2012 at 12:49pm
so its 4a^2b^8?

- Math add the polynomials -
**MathMate**, Thursday, June 7, 2012 at 1:08pm
I mean this is correct:

"ahh so the 7ab cancels because of the -7ab so answer is 5a²b4."

- Math add the polynomials -
**Henry**, Friday, June 8, 2012 at 6:53pm
Post it.

- Math add the polynomials -
**MathMate**, Friday, June 8, 2012 at 7:47pm
"...so answer is 5a²b4"

## Answer this Question

## Related Questions

- Tirginometry - the expression 4ab(square root of)2b-3a(square root of)18b^3+7ab(...
- Math - 3^-2/n and 7ab^-2/3w .
- math - 7ab-2b^2+4a^2
- math - Factorise. 7ab-2b^2+4a^2
- math - 3a2-9ab+4b2-7ab=
- Math - Simplifying (4ab x (sqrt 2b)) - (3a x (sqrt18b^3)) + (7ab x (sqrt6b))
- algebra 1 - what is the degree of the trinomial? a3+7ab-8b4
- algebra - I have to simplify 7ab to the power of -2 over 3w. How do I do this?
- math - sums and differences of rational algebraic expression please answer the ...
- Algebra - Exponents: Simplify the expression 7ab^-2 / 3w I got 7a3w / b^2 Is ...

More Related Questions