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

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

• Math add the polynomials -

You need to find the like terms, for example, a²b4 and 4a²b4 are like terms.
You can add them together to make 5a²b4.
So
a²b4+4a²b4=5a²b4

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 -

ahh so the 7ab cancels because of the -7ab so answer is 5a²b4. I thought it was 4a4b8

Thank you

• Math add the polynomials -

yes 7 a b - 7 a b = 0
5 a^2 b^4

• Math add the polynomials -

so its 4a^2b^8?

• Math add the polynomials -

I mean this is correct:
"ahh so the 7ab cancels because of the -7ab so answer is 5a²b4."

• Math add the polynomials -

Post it.

• Math add the polynomials -

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