y = 2x² - 2x - 3
f(-2) = 2·(-2)² - 2(-2) - 3 = 2·4 + 4 - 3 = 8 + 1 = 9
f(3) = 2·3² - 2·3 - 3 = 18 - 6 - 3 = 9
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y = 2x² - 2x - 3
f(-2) = 2·(-2)² - 2(-2) - 3 = 2·4 + 4 - 3 = 8 + 1 = 9
f(3) = 2·3² - 2·3 - 3 = 18 - 6 - 3 = 9