Given the polynomial 2x^3+18x^2-18x-162, what is the value of the constant "k" in the factored form?
1 answer:
2x³+18x²<span>-18x-162 =
2(</span>x³+9x²-9x-81)=
2(x²(x+9)-9(x+9))=
2(x²-9)(x+9)=
2(x+3)(x-3)(x+9)
Answer: k=3
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