Ответ:
Х1 =
Х2 =
Объяснение:
-7х^2 -9x +1 +1 =0
-7x^2 -9x+5 = 0
7x^2 +9x - 5 =0
Решаем квадратное уравнение через дискриминант
a=7 b=9 c = -5
x=
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Ответ:
Х1 =
Х2 =
Объяснение:
-7х^2 -9x +1 +1 =0
-7x^2 -9x+5 = 0
7x^2 +9x - 5 =0
Решаем квадратное уравнение через дискриминант
a=7 b=9 c = -5
x=
Х1 =
Х2 =