Factor 2x2 -5x - 3 Group of answer choices (2x - 1) ( x + 3 ) (x - 1) ( x + 3 ) (2x +1) ( x - 3 ) (x + 1) ( x - 3 )

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?

With these 5 geometry questions! pls 1.)quadrilateral abcd is inscribed in this circle.what is the measure of ∠a ? enter your answer in the box.°2.)quadrilateral abcd is inscribed in a circle.what is the measure of angle a? enter your answer in the box.m∠a= 3.)quadrilateral abcd is inscribed in this circle.what is the measure of angle b? enter your answer in the box.m∠b= °4.)quadrilateral abcd is inscribed in this circle.what is the measure of angle a? enter your answer in the box.°5.) quadrilateral abcd is inscribed in this circle.what is the measure of angle c? enter your answer in the box.°

Can someone show me step by step how to do this?