Oblicz pierwiastki wielomianów:
W(x) = x^3 -2x^2 -9x +18W(x) = x^3 + 3x^2 +5x +15W(x) = x^3 - 4x^2 - 7x +28
W(x) = x³ -2x² -9x +18
x²(x-2)-9(x-2)=0
(x-2)(x²-9)=0
(x-2)(x-3(x+3)=0
x=2 ∨ x=3 ∨ x=-3W(x) = x³ + 3x² +5x +15
x²(x+3)+5(x+3)=0
(x+3)(x²+5)=0
x=-3W(x) = x³ - 4x² - 7x +28
x²(x-4)-7(x-4)=0
(x-4)(x²-7)=0
(x-4)(x-√7)(x+√7)=0
x=4 ∨ x=√7 ∨ x=-√7
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
W(x) = x³ -2x² -9x +18
x²(x-2)-9(x-2)=0
(x-2)(x²-9)=0
(x-2)(x-3(x+3)=0
x=2 ∨ x=3 ∨ x=-3
W(x) = x³ + 3x² +5x +15
x²(x+3)+5(x+3)=0
(x+3)(x²+5)=0
x=-3
W(x) = x³ - 4x² - 7x +28
x²(x-4)-7(x-4)=0
(x-4)(x²-7)=0
(x-4)(x-√7)(x+√7)=0
x=4 ∨ x=√7 ∨ x=-√7