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Black Advanced Problems in Mathematics
Exam
Black Advanced Problems in Mathematics
Subject
Mathematics
Chapter
Quadratic Equation

Black Advanced Problems in Mathematics · Mathematics · Quadratic Equation

If A, B and C are the roots of cubic x^3 + ax^2 + bx + c = 0 ,...

If cos⁡A,cos⁡B\cos A, \cos B and cos⁡C\cos C are the roots of cubic x3+ax2+bx+c=0x^3 + ax^2 + bx + c = 0, where A,B,CA, B, C are the angles of a triangle then find the value of a2−2b−2ca^2 - 2b - 2c.

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