To find the zeroes of the polynomial function and their multiplicities, identify the values of x x x that make each factor zero. The exponent of each factor indicates the multiplicity of the corresponding zero.
The given polynomial function is f(x)=(x+10)5(x−4)2(x−8) f(x) = (x + 10)^{5}(x - 4)^{2}(x - 8) f(x)=(x+10)5(x−4)2(x−8). The factors of this polynomial are (x+10) (x + 10) (x+10), (x−4) (x - 4) (x−4), and (x−8) (x - 8) (x−8).
To find the zeroes, set each factor equal to zero:
The multiplicity of each zero corresponds to the exponent of its factor:
The zeroes and their multiplicities are:
Thus, the answer is x=−10, multiplicity 5; x=4, multiplicity 2; x=8, multiplicity 1 \boxed{x = -10, \text{ multiplicity } 5; \, x = 4, \text{ multiplicity } 2; \, x = 8, \text{ multiplicity } 1} x=−10, multiplicity 5;x=4, multiplicity 2;x=8, multiplicity 1.
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