Question

Given that a and b are integers and that $5x+2 \sqrt{7}$ is a root of the polynomial $x^2-ax+b+2 \sqrt{7}$ in ,$x$ what is the value of b?

• A. 5
• B. 2
• C. 9
• D. 7
• E. 14

Answer 1

Answer: (A)

5

Answer 2

The correct option is (A) :5.