Respuesta :

Answer:

7x^2+10y^2-2x is the correct answer, Marcus put -10y INSTEAD of +10y^2

Step-by-step explanation:

(3x^2-2y^2+5x)+(4x^2+12y^2-7x)

Combine like terms- I'll add x^2 first, then y^2, and then finally x, and it will be in that order.

7x^2+10y^2-2x

Make sure to check your signs are correct, and you wrote down the proper exponents.




taylornikulshin

Answer:

He combined the terms –2y2 and 12y2 incorrectly.

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