👤
Adi4344444
a fost răspuns


2
(x+2) - x (x+5)=2 (x-7)

Răspuns :

Mitica123
2(x+2) - x (x+5)=2 (x-7)

2x+4-x²+5x=2x-14
x²+5x=10
Coviltirflorin
2x+4 - x^2 - 5x= 2x-14
4 - x^2 - 5x + 14 = 0
-x^2 - 5x + 18 = 0
Δ = b^2 - 4ac
Δ = 25 - 4(-1)(18) = 25 + 72 = 97
x1,2 =  (-b+- √Δ)/2a  => x1= (5+[tex] \sqrt{97} [/tex])/ -2 si x2 = (5+[tex] \sqrt{97} [/tex])/ -2

Alte intrebari