Question

plzzz solve ........​

Answer 1

$f(x) = f(2x + 1) \\ \\ so.... \\ \\ f(x) \: \: \: \: \: \: \: \: \: \: = (2x + 1) {}^{2} - 3(2x + 1) + 4 \\ f(2x + 1) = 4x {}^{2} + 4x + 1 - 6x - 3 + 4 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4x {}^{2} - 2x + 2$