# 40 + 3x – x2=?A. (5 + x) (x - 8)B. (5 - x) (8 + x)C. (5 + x) (8 - x)D. (5 - x) (8 - x)

40 + 3x – x2

Factorizing the equation and taking 8 and – x as common,

= 40 + 8x – 3x – x2

= 8(5 + x) – x(5 + x)

= (8 – x)(5 + x).

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