Are the two expressions in the equation 2b + 5 + 1b = 3b + 5 equal or equivalent? How do you know?
2 answers:
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Answer:
420
Step-by-step explanation:
The remainder theorem tells you the remainder is f(4), which you can find by evaluating the expression for x=4. Evaluation is simpler if the expression is written in Horner form first.
... f(x) = (((x +4)x -1)x -16)x -12
... f(4) = (((4 +4)4 -1)4 -16)4 -12
... = ((8·4 -1)4 -16)4 -12
... = (31·4 -16)4 -12
... = 108·4 -12 = 420
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<em>Comment on evauation using Horner's form</em>
The intermediate results (contents of parentheses) are the same as the intermediate results you get when you use synthetic division.
