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= 2(7x - 5)² + 1
= 2(49x² - 70x + 25) + 1
= 98x² - 140x + 50 + 1
= 98x² - 140x + 51
(fog)(1) = 98(1)² - 140(1) + 51
= 98 - 140 + 51
= 9
(gof)(x) = 7(2x² + 1) - 5
= 14x² + 7 - 5
= 14x² - 2