Can u please help with these questions, they're do in 10 minutes and I have trouble with angles

2x - 20 = 32 20 - 3x = 8 6x - 8 = 16 -13 - 3x = -10

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0

Given sin∅ = 1/3 and 0 < ∅ < π/2 ; find tan2∅ a. (4√2)/9 b. 9/7 c. (4√2)/7 d.7/9