Q. 104.4( 63 Votes )

Substituting <spa

Answer :

(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


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