I. x ² + 5 x + 6 = 0 ( x + 3) ( x + 2) = 0 x = -3, -2 II. y²+ 7 y + 12= 0 ( y + 4) ( y + 3) = 0 y = -3, -4 Hence, x ≥ y
217 210 236 299 423 640
...412, 320, 241, 169, 106, 52
192 576 72 216 28 81
625, 250, 100, 40, 16, 6
What will come in place of the question mark (?) in the following series?
120, 128, 144, 168, 240
1990,1877, 1794, 1711, 1638
8, 17, 35, 71, 143, 287
16, 36, 128, 768, 6144, 61440
92, 88, 79, 63, 40
2 27 43 50 56 57
...