Given that a and b are integers and that $5x+2\sqrt{7}$ is a ro… | XAT 2019 Question Paper

XAT 2019Quantitative AbilityQuadratic EquationsHARD+1 / −0.25

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?

Select an option to reveal the answer and explanation

Practice the full paper

Attempt XAT 2019 Question Paper with real exam interface and instant grading.

XAT 2019Quantitative AbilityQuadratic EquationsHARD+1 / −0.25

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?

Select an option to reveal the answer and explanation

Practice the full paper

Attempt XAT 2019 Question Paper with real exam interface and instant grading.