How do you find the sum or difference of (5a2 plus 6a plus 2)-(7a2-7a plus 5)?

1 Answer

Answer :

Combine like terms, adding/subtracting the coefficients:(5a² + 6a + 2) + (7a² - 7a + 5) = (5+7)a² + (6-7)a + (2+5) =12a² - a + 7(5a² + 6a + 2) - (7a² - 7a + 5)= (5a² + 6a + 2) + (-7a² + 7a - 5) = (5-7)a² + (6+7)a + (2-5) =-2a² + 13a - 3

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