2x - 2y = 14
x = 2 + y
solve by substitution

(hurry! ) which expression is equivalent to the following complex fraction?

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

Evaluate the expression. (9 + 5)(3 + 2)0