Remark
What value of k will make the entire polynomial = 0 when k is meant to be a factor? In brief, solve the polynomial when f(-3) is substituted into the right hand side.
f(x) = 2x3+x2+kx+18
f(-3) = 2x3+x2+kx+18
f(-3) = 2(-3)^3 + (-3)^2 - 3k + 18 = 0
-54 + 9 - 3k + 18 = 0
-54 + 9 + 18 - 3k = 0
-27 - 3k = 0
- 3k = 27
k = 27/ - 3 = - 9
Answer
k = -9
Check
2x^3 + x^2 - 9x + 18 = 0
2(-3)^3 + (-3^2) - 9(-3) + 18 = 0
-54 + 9 + 27 + 18 = 0 Just as it should be.
Answer:
The average cost of center-based daycare in the United States is $11,666 per year ($972 a month), but prices range from $3,582 to $18,773 a year ($300 to $1,564 monthly),
Step-by-step explanation:
Answer:
-5
Step-by-step explanation:
f(x)=y
when x = 4 is when y = -5
Answer:
7/8 inch
Step-by-step explanation:
Subtract 3/8 from 1 1/4:
5/4 - 3/8
becomes 10/8 - 3/8 = 7/8 (inch)
