Q. 163.7( 3 Votes )
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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