Which equations are quadratic? Check all that apply.
A. 2x2 + 3 = 0
B. x3 – 7x+ 1 = 0
C. 4x2 + 8x = 0
D. 5x – 12 = 0
E. x2 + 2xy + 9 = 0
F. x2 + 2x + 7 = 0

What is the value of this expression when b= 5 6 (2b-4)

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Factor x2 – 8x + 15. which pair of numbers has a product of ac and a sum of what is the factored form of the