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Can someone please help me with this question

Can someone please help me with this question-example-1

1 Answer

1 vote

Answer:

B, E

Explanation:

It can be helpful to factor the first two terms:

f(x) = x^2(x -7) +36

This can make it easier to evaluate the function for different values of x.

The answer choices suggest you need to know whether f(5) and f(-14) match the values given here.

f(5) = 5^2(5 -7) +36 = -50 +36 = -14 . . . . matches choice B (and E)

f(-14) = (-14)^2(-14-7) +36 = -21(196) +36 . . . . does not match choice A (or D)

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The one remaining answer choice we need to consider is C. If we look at f(0) for this equation, we find it is (-5)(-10) +14 = 64, which does not match f(0) = 36 for the function given in the problem statement.

The only true answer choices are B and E.

_____

The remainder theorem tells you that f(a) = the remainder from f(x)/(x -a).

Can someone please help me with this question-example-1
User Haxwithaxe
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