В.3 Решите ур-е.-(3х-1)^2+2(5+x)*(x-5)+7x^2=3

Question

В.3 Решите ур-е.-(3х-1)^2+2(5+x)*(x-5)+7x^2=3

Answer 1

-9x^2+6x-1+2x^2-50+7x^2-3=0
6x-54=0
6x=54
x=9

Comments

Спасибо)))\