Question: Express each function in the form a( x + b) 2 + c, where a, b and c are constants and, hence, state the range

Express each function in the form a( x + b)2 + c, where a, b and c are constants and, hence, state the range of each function.

a. f(x) = x2 + 6x − 11 for x ∈ ℝ 

b. f(x) = 3x2 − 10x + 2 for x ∈ ℝ

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