Problem Solving Skills for Mathcounts Competitions

Book Store => Bookstore => Twenty Mock Mathcounts Sprint Round Practices => Topic started by: mathcount on February 15, 2011, 11:58:40 AM

Title: mock Mathcount set 1 question 19
Post by: mathcount on February 15, 2011, 11:58:40 AM

Add a single term to a polynomial 4x^2 + 1 to result in a square number. How many such single terms are there?

Please help again

Title: Re: mock Mathcount set 1 question 19
Post by: yongcheng3315 on February 16, 2011, 08:17:04 AM

Sorry the answer key should be 5:


-4 x², -1, 4x, -4x, and 4x⁴