Quadratic Equations
4 solved problems from JEE previous year papers.
Theory of Equations
Sum of Cubes of All Roots of x⁴−3x³−2x²+3x+1=0
Find α³+β³+γ³+δ³ for the roots of x⁴−3x³−2x²+3x+1=0 by factoring the quartic into two quadratics, avoiding solving for the roots…
Quadratic Equations
Product of Rational Roots of (x²−9x+11)²−(x−4)(x−5)=3
Find the product of all rational roots of (x²−9x+11)²−(x−4)(x−5)=3 by substituting y=x²−9x+11 to reduce it to a simple quadratic…
Quadratic Equations
Find the Positive Square Root of 3+√5
Find the positive square root of 3+√5 by expressing it as √x+√y, splitting the equation into a rational and irrational part, and…
Quadratic Equations
Roots of x²−√2x−√3=0, Pn=αⁿ−βⁿ, Find (11√3−10√2)P10+(11√2+10)P11−11P12
Let α, β (α>β) be roots of x²−√2x−√3=0 and Pn=αⁿ−βⁿ. Find (11√3−10√2)P10+(11√2+10)P11−11P12 using the Newton recurrence for power…