Which second degree polynomial function has a leading coefficient of -1 and root 4 with multiplicity 2?
a f(x) = -x- - 8x - 16
b f(x) = -x2 + 8x - 16
c f() = -x2 - 8x + 16
d f(x) = -x2 + 8x + 16

Answer B:

Step-by-step explanation:

A polynomial of root 4 with multiplicity 2 must contain the factor (x-4) twice, that is must contain

Now, since the the leading coefficient must be "-1" instead of the coefficient we have (1), all we need to do is to multiply the polynomial we just found times the multiplicative factor "-1":

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: