To evaluate the given polynomial function for the given value of x by using the synthetic substitution.
The value of the given polynomial function is 248 .
Given:
f(x)=x4+3x−20 ; x=4
Calculation:
Consider,
f(x)=x4+3x−20f(x)=x4+0x3+0x2+3x−20
Write the coefficients of f(x) in order of descending exponents and write the value at which f(x) is being evaluated to the left. That is,
4|1 0 0 3 −20¯
Now bring down the leading coefficient, then multiply the leading coefficient by x -value, then write the product under the second coefficient, and then add. Repeat this process for all the remaining coefficients. That is,
4| 1 0 0 3 −20 ↓ 4 16 64 268 ↓ ↓ ↓ ↓¯ 1↗ 4↗ 16↗ 67 ↗ 248
Hence f(4)=248 .
Chapter 2 Solutions
Algebra 2: New York Edition (holt Mcdougal Larson Algebra 2)
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