Book: NCERT - Mathematics
Chapter: 14. Factorisation
Subject: Maths - Class 8th
Q. No. 10 of Exercises 14.4
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10
Substituting 
in
(A) 
gives 
(B) 
gives 
(C) 
gives 
(A) On substituting x = -3 in the given expression, we get
= (-3)2 + 5(-3) + 4 = 9 -15 + 4 = -2
Hence correct expression is:
= (-3)2 + 5(-3) + 4 = 9 -15 + 4 = -2
(B) 
On substituting x = -3 in the given expression, we get
= (-3)2 - 5(-3) + 4 = 9 +15 + 4 = 28
Hence correct expression is:
= (-3)2 - 5(-3) + 4 = 9 +15 + 4 = 28
(C) On substituting x = -3 in the given expression, we get
= (-3)2 + 5(-3) = 9 -15 = -6
Hence correct expression is:
= (-3)2 + 5(-3) = 9 -15 = -6
10
Chapter Exercises
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