1.

Minimum value (x-2)(x-9)

Answer»

(x -2) (x -9)= (x^2 2x - 9x + 18)=(x^2 - 11x + 18)= x^2 - 11x + 121/4 - 121/4 + 18(x - 11/2)^2 - 49/4x = 11/2 = -49/4



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