The questions are in the attached picture. answer all 3. part a, b, and c.

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 23 = 10x a. -1.93, 11.93 b. 1.93, -11.93 c. 1.93, 11.93 d. -1.93, -11.93

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b

Solve the triangle. a = 21°, c = 105°, c = 5