Найти корни уравнения за дискриминатом или теоремой Виета, как вам удобно.
1) (2x-1)(2x+1)-(x-3)(x+1)=18
1) (2x-1)(2x+1)-(x-3)(x+1)=18
More Questions From This User See All
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
4x^2-1-x^2-x+3x-1-18=0; 3x^2 +2x -16 = 0;
D = 4 + 192 = 196. x1 = (-2 - 14)/6 = -8/3
x2 = (-2 + 14)/6 = 2.