Question

Use the Remainder Theorem to find the remainder when f(x) is divided by x-k. Is x-k a factor of f(x)?

x+2; 7x^4-12x^3-10x+4

Answer 1

f(x) = 7x^4-12x^3-10x+4

f(-2) = 7(-2)^4-12(-2)^3-10(-2)+4

f(-2) = ???

Answer 2

f(-2)=232
Is x-k a factor of f(x)?

Answer 3

since f(-2) = 232, this means that the remainder is 232

since the remainder is NOT 0, x+2 is NOT a factor of f(x)

Answer 4

Thank you SO much!

Answer 5

np