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Mathematics, 13.01.2021 22:00 hannahe83

What is the sum of the polynomials? (8x^2 - 9y^2 - 4x) + (x^2 - 3y^2 - 7x)

* 7x^2 - 6y^2 + 3x
* 9x^2 - 6y^2 + 3x
* 9x^2 - 12y^2 + 3x
* 9x^2 - 12y^2 - 11x

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What is the sum of the polynomials? (8x^2 - 9y^2 - 4x) + (x^2 - 3y^2 - 7x)

* 7x^2 - 6y^...
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