Test Mode
Reading Mode
Right = 0
Wrong = 0
2x + y = 4
2x - y + 4 = 0
2x + y = 0
2x - y = 0
(x:x ∈ A এবং x ∈ B)
(x:x∈ A অথবা x ∈ B)
(x:x ∈ A এবং x B)
{x:x ∈ A অথবা x B}
{x ∈ R : x <-2}
{x ∈ R : x ≤ -2}
{x ∈ R : x<2}
{x ∈ R : x ≤ 2}