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Quadratic Equations, Time: 1 Hour: MM : 20, , , , , , SECTION-A, 1, The value of kis ifx=3 is one root of x°~2kr—6=0. 1, 2. Ifthe discriminant of 3x°-+2x + a= 0 is double the discriminant of x°—4x+2=0, then value of ais 1, 3. If discriminant of 6x°~ bx +2=0 is 1 then value of Bis... 1, 4, (x= 1)! = x41 is quadratic equation, (T/P) 1, SECTION-B, 5, Iroots of x? + kx + 12=0 are in the ratio 1:3 find & 2, 1, 6. Solve for: 21x? 24+ 57 2, 7. Find & if the quadratic equation has equal roots : kx (x2) + 6=0. 2, SECTION-C, 8. Solve using quadratic formula 3, Agr’ +5x-2V3=0, 9, For what value ofk, (4 ~ ky? + (2k-+4)w+ (8+ 1)= O isa perfect square, 3, , SECTION-C, , 7, 10, Two water taps together can fill atank in I> hours. The tap with longer diameter, , takes 2 hours less than the tap with smaller one to fill the tank separately, Find the, time in which each tap can fil the tank separately, (CBSE 2018), 4, , ™