👤

f) x²+16=2+4+6+...+32
g) x+2/x=3/x+1
dau coroană ♥♥


Răspuns :

2+4+6...+32=2(1+2+3+4...+16)=2*16*17/2=16*17=272
x^2-256=0
x1= +16
x2=-16
g) (x+2)/x=3/(x+1) atunci
aducem la acelasi numitor
(x+2)(x+1)=3x
x^2+3x+2=3x
x^2+2=0