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Which polynomial represents the sum below?

(4x2 + 6) + (2x2 + 6x + 3)

A. 8x2 + 6x + 18
B. 8x2 + 6x + 9
C. 6x2 + 6x + 9
D. 6x2 + 6x + 18

Respuesta :

(4x² + 6) + (2x² + 6x + 3) = 4x² + 6 + 2x² + 6x + 3 = 6x² + 6x + 9 

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Answer:  6x² + 6x + 9  (Answer C)
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Correct answer is C
you need only remove parentheses( signs are not changing because + in front of parentheses) , and find like terms

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