Ola JOANA
p(x) = 3x^3 - x^2 + ax + 9
x + 3 = 0
x = -3
p(-3) = -81 - 9 - 3a + 9 = 0
3a = -81
a = -27
p(x) = 3x^3 - x^2 - 27x + 9
x - 3 = 0
x = 3
p(3) = 81 - 9 - 81 + 9 = 0
(x + 3)*(x - 3) = x^2 - 9 (B)
pronto
Copyright © 2024 1QUIZZ.COM - All rights reserved.
Answers & Comments
Ola JOANA
p(x) = 3x^3 - x^2 + ax + 9
x + 3 = 0
x = -3
p(-3) = -81 - 9 - 3a + 9 = 0
3a = -81
a = -27
p(x) = 3x^3 - x^2 - 27x + 9
x - 3 = 0
x = 3
p(3) = 81 - 9 - 81 + 9 = 0
(x + 3)*(x - 3) = x^2 - 9 (B)
pronto