What is the value of the leading coefficient a if the polynomial function P(x) = a(x + b)2(x − c) has multiplicity of 2 at the point (−3, 0) and also passes through the points (2, 0) and (0, 36)?
answers:
−2−3336

Respuesta :

The polynomial is of the form:

[tex]P(x)=a (x+b)^{2}(x-c) [/tex]

We are provided with the two zeros in the question statement. The zero with multiplicity 2 is -3, and zero with multiplicity 1 is 2. So using these values, the polynomial becomes:

[tex]P(x)=a (x+3)^{2}(x-2) [/tex]

The polynomial also passes from the point (0,36). This mean if we substitute x=0, the answer should be 36.

[tex]P(0)=36=a (0+3)^{2}(0-2) \\ \\ 36=a(9)(-2) \\ \\ 36=-18a \\ \\ a=-2 [/tex]

Thus the value of a for given polynomial will be -2. The complete equation of polynomial will be:

[tex]P(x)=-2 (x+3)^{2}(x-2)[/tex]