Квадрат теңдеулерді шешіңіз?

Question

1. x^2-4x+4=0

2. x^2-9x-22=0

3. x^2-16x+48=0

4. 4x^2+x+1=0

5. 7x^2-x-1=0

6. 14y^2+11y-3=0

7. z^2-6z+9=0

8. y^2+y-6=0

Формуласы: Д=в^2-4а×с

Х1=-в+√Д/2×а

Х2=-в-√Д/2

Answer 1

http://ru.onlinemschool.com/math/assistance/equation/quadratic/