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Algebra
Polynomials
Exponents and Powers
What is the coefficient of x^4 in (x^2−x−2)^7?
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expanded form is :::x^14-7 x^13+7 x^12+49 x^11-91 x^10-161 x^9+357 x^8+363 x^7-714 x^6-644 x^5+728 x^4+784 x^3-224 x^2-448 x-128
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