Mathegoras

Functions › Quadratic functions and parabolas › Quadratic from its values

Weighted sum of quadratic values

Middle school · ●○○○○ 10 pts

Consider the function f(x)=2x2−4x+9f(x) = 2x^2 - 4x + 9. Evaluate 2f(3)+3f(−3)2f(3) + 3f(-3).

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function evaluationquadratic functionssubstitution