Question

Question 7 of 10

Answer 1

Answer:

B. x = 5/2

Step-by-step explanation:

quadratic formula is:

($x=-b$ ± $\sqrt{b^2-4ac}$)/2a

when $ax^2$ + bx + c = 0

in this equation, a = 1, b = -5, c = 25/4

plug those into the equation and simplify to get x=5/2

(because b^2-4ac in this case is equal to 0, there is only one answer)