Quadratic Equations-1

Question 1.If α,β are the roots of x2+5x+k=0 and α2β+αβ2=-30 , then k= _____ Option 1) 8        […]

Question 1.Which of the following quadratic equation has the discriminant zero? Option 1) x2+4x+2=0        2) x2+4x+4=0        3) 2×2+4x-2=0       4) 2×2-4x-2=0

Question 1.If [math]x=sqrt{3+sqrt{3+sqrt{3+……infty}}}, [/math]then Option 1) x2-x+3=0 2) x2+x+3=0          3) x2-x-3=0 4) x2+x+3=0 Question 2.If one root of the

Question 1.In a quadratic equation ax2+bx+c=0,b2-4ac is called Option 1) Real        2) Positive   3) Root        4) Discriminant Question

Question 1.The roots of the equation x2+5x+1=0  are Option 1)[math] frac{5+sqrt{21}}{2},frac{5-sqrt{21}}{2}[/math] 2) [math] frac{-5pmsqrt{21}}{2}[/math] 3) [math] frac{-5pmsqrt{29}}{2}[/math] 4) [math] frac{-5pmsqrt{-29}}{2}[/math]

Question The roots of the equation [math] frac{1}{2x-3}-frac{1}{2x+5}=8[/math] are Option 1) [math] 2-frac{1}{sqrt2},2+frac{1}{sqrt2}[/math] 2) [math] frac{-1pmsqrt7}{2}[/math] 3) [math] 2pmfrac{1}{sqrt2}[/math] 4)

Question If α,β are the roots of 3×2+7x+5=0 then Option 1) α+β=5/3 2) α+β= -7/3 3) |α+β|= 4) αβ=-5/3 Solutions

Question If α,β are the roots of 6×2-6x+1=0 then Option 1) α+β=1 2) |α+β|= -1/√3 3) α2+β2=2/3 4) |α+β|=1/√3 Solutions