Question

Rezolvati ecuatia:
x la a 2+(x+2) la a 2+(x+4) la a 2=4(3x+8)

Answer 1

x² +(x+2)² + (x+4)²= 4(3x+8)
x² + x² + 4x + 4 + x² +8x +16 = 12 x + 32
3x² +12 x - 12 x= 32-20
3x² = 12
x² = 4 ⇒ x² = 2² , x² = (-2)²
⇒ x = 2, x= -2

Answer 2

x^2+ x^2+4x+4+x^2+8x+16=12x+32
3x^2+12x+20=12x+32
3x^2=32-20=12
x^2=12:3=4
Sunt 2 solutii
x=2 si x= -2