x²+6x-17=0
x1+x2=-6 ;
x1•x2= -17
(т.Виета)
x1²+x2²=(x1+x2)²-2•x1•x2=
= (- 6)² - 2( - 17) = 36 + 34 = 70
ответ : 70
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Verified answer
x²+6x-17=0
x1+x2=-6 ;
x1•x2= -17
(т.Виета)
x1²+x2²=(x1+x2)²-2•x1•x2=
= (- 6)² - 2( - 17) = 36 + 34 = 70
ответ : 70