Question

find the quadratic equation, if
$2 + \sqrt{15 \: } and \: 2 - \sqrt{15 \: }$
are the 2 roots of the equation..​

Answer 1

Sum of roots = 4
Product of roots = 4-15 = -11
Equation
X^2-(4)X+(-11)=o
X^2-4x-11=0