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= 4x - 4-5
= 4x - 9
f(2x+1) = 4(2x+1) - 5
= 8x + 4 - 5
= 8x - 1
f(x²) = 4(x²) - 5
= 4x² - 5
= 4x - 4 - 5
= 4x - 9
f (2x + 1) = 4 (2x + 1) - 5
= 8x + 4 - 5
= 8x - 1
f (x²) = 4 (x²) - 5
= 4x² - 5