4x^2+x+5=0
⚠ 4x is read as the product 4*x: for a power, write 4^x
Let's solve in ℝ: 4x2 + x + 5 = 0
Given the quadratic form ax2 + bx + c, let's compute the discriminant: Δ = b2 -4ac
Δ = 1 -4·4·5
Δ = 1 -16·5
Δ = 1 -80
Δ = -79
Since Δ < 0, the equation has no solution.
Could not solve in ℝ for: x
▶Solution:   x ∈ ∅