Question

СРОЧНО. ЗАПОЛНИТЕ ТАБЛИЦУ. 15 БАЛЛОВ​

Answer 1

Ответ:

$1) \\ {x}^{2} + 7x - 60 = 0 \\ a = 1. \: \: b = 7. \: \: c = - 60. \: \: x1 = - 12. \: \: x2 = 5. \: \: x1 + x2 = - 12 + 5 = - 7. \: \: x1 \times x2 = - 12 \times 5 = - 60$

$2) \\ {x}^{2} + x - 90 = 0 \\ a = 1. \: \: b = 1. \: \: c = - 90. \: \: x1 = - 10. \: \: x2 = 9. \: \: x1 + x2 = - 10 + 9 = - 1. \: \: x1 \times x2 = - 10 \times 9 = - 90$

Answer 2

Ответ:

1) a= 1 b=7 c=-60 x1=-12 x2=5 x+x=-7 x-x=-17

2) a=1 b=1 c=-90 x1=-10 x2=9 x+x=-1 x-x =-19