What is x? use the pythagorean theorem

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

Can someone me with my math problem pls my teacher is on my back about this

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?