11. Решите уравнение 3х² –108 = 0.

Question

11. Решите уравнение 3х² –108 = 0.

Answer 1

3х²-108 = 0
3х²=108
х² = 108 : 3
х² = 36
√х² = √36
х = |6|
х₁ = 6
х₂ = - 6

Answer 2

3x^2=108
x^2=108÷3
x^2=36
x=6;-6