Given AB is a tangent to circle O, solve for X.

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0