Use what you know about addition and subtraction of polynomials to find the missing term represented by the question mark in each equation.(–4x2 + 6x + 3) + (8x + 5 + ?) = 2x2 + 14x + 8? = -6x² -2x² 2x² 6x²

Combine the known terms on the left: (−4x² + 6x + 3) + (8x + 5) = −4x² + 14x + 8. To reach 2x² + 14x + 8, the missing term must add 6x², since −4x² + 6x² = 2x². Therefore, the missing term is 6x², choice D.

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