1.

Expression (x – 3) will be a factor of polynomial f(x) = x3 + x2 – 17x + 15 if:(A) f(3) = 0(B) f(-3) = 0(C) f(2) = 0(D) f(-2) = 0

Answer»

Answer is (A) f(3) = 0

f(x) = x3 + x2 – 17x + 15

f(3) = (3)3 + (3)2 – 17(3) + 15 

= 27 + 9 – 51 + 15 = 0

f(3) = 0



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