Odpowiedź:
Szczegółowe wyjaśnienie:
f(x) = ax² + bx + c = a(x + 4)(x - 6) . A = (-2,-3)
f(-2) = a * (-2 + 4)(-2 - 6) = a * 2 * (-8) = -16a = -3 I : (-16)
a = 3/16
f(x) = 3/16 (x + 4)(x - 6) = 3/16 (x² - 6x + 4x - 24) = 3/16 (x² - 2x - 24) = (3/16) x² - (6/16) x - 72/16 = (3/16) x² - (3/8) x - 4 i 8/16 = (3/16) x² - (3/8) x - 4 i 1/2
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Odpowiedź:
Szczegółowe wyjaśnienie:
f(x) = ax² + bx + c = a(x + 4)(x - 6) . A = (-2,-3)
f(-2) = a * (-2 + 4)(-2 - 6) = a * 2 * (-8) = -16a = -3 I : (-16)
a = 3/16
f(x) = 3/16 (x + 4)(x - 6) = 3/16 (x² - 6x + 4x - 24) = 3/16 (x² - 2x - 24) = (3/16) x² - (6/16) x - 72/16 = (3/16) x² - (3/8) x - 4 i 8/16 = (3/16) x² - (3/8) x - 4 i 1/2