Question

3x.(x - 2) = 1 + 2x²

Answer 1

3x.(x - 2) = 1 + 2x²

3x² -6x = 1 + 2x²

3x² - 2x² -6x -1 = 0

x² - 6x -1

Δ = b² - 4.a.c

Δ = -6² - 4.1.(-1)

Δ = 36 +4

Δ = 40