Find the remainder when 3x3 5x2 - 11x 4 is divi... - JAMB Mathematics 2004 Question
Find the remainder when 3x3 + 5x2 - 11x + 4 is divided by x + 3
A
-4
B
4
C
1
D
-1
correct option: c
x = -3
substitute x = -3 in 3x3 + 5x2 - 11x + 4
3(-3)3 + 5(-3)2 - 11(-3) + 4
-81 + 45 + 33 + 4
-81 + 82
= 1
substitute x = -3 in 3x3 + 5x2 - 11x + 4
3(-3)3 + 5(-3)2 - 11(-3) + 4
-81 + 45 + 33 + 4
-81 + 82
= 1
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