8, 7, 12, 35, 128, 635
8 × 1 – 1 = 7 7 × 2 – 2 = 12 12 × 3 – 3 = 33 33 × 4 – 4 = 128 128 × 5 – 5 = 635
I. 15b2+ 26b + 8 = 0
II. 20a2+ 7a - 6 = 0
I. x2 - 17x + 70 = 0
II. y2 - 11y + 28 = 0
I. 2y2– 19y + 35 = 0
II. 4x2– 16x + 15 = 0
I. 2x2– 25x + 33 = 0
II. 3y2+ 40y + 48 = 0
I. 2x2 + 3x - 9 = 0
II. 3y2 - y - 10 = 0
I. 12y2 + 11y – 15 = 0
II. 8x2 – 6x – 5 = 0
If α, β are the roots of the equation x² – px + q = 0, then the value of α2+β2+2αβ is
...I. x2 - 20x + 96 = 0
II. y2 - 23y + 22 = 0
I. x2 – 13x + 36 = 0
II. 3y2 – 29y + 18 = 0
I. 2x² - 15x + 13 = 0
II. 3y² - 6y + 3 = 0