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

1.	40 + 3x – x2=? A. (5 + x) (x - 8) B. (5 - x) (8 + x) C. (5 + x) (8 - x) D. (5 - x) (8 - x)
Answer» 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).

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

Answer»

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).