The diagram represents the factorization of x2−9⁢x+18. It is partially completed. x negative 3 x x squared ? negative 6 ? 18 Which two terms are missing from the diagram?

To factor x² − 9x + 18, find two numbers whose product is 18 and whose sum is −9. Those numbers are −3 and −6, so the middle-term pieces are −3x and −6x. The missing terms are negative 3x and negative 6x, choice B.

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