1+х/6-6/1+х=4/х+1+1+/4
1х/6-6/1х=4/1х+1х/4
2х/6=4/2х
4х=24
х=24/6
х=6
(5*9)*(5*64)=45*320=14400
Ответ:
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Решение
а) х²-15х+14=0
x₁ + x₂ = - p
x₁ * x₂ = q
x² + px + q = 0
x₁ = 1
x₂ = 14
б) х²+9х+20=0
x₁ = - 4
x₂ = - 5
(2х+7)(3х-1)-(5х-1)(х+3)=(х+1)²