I. 2x2– 5x – 12 = 0
II. 2y2+ 13y + 20 = 0
I. 2x2 – 5x – 12 = 0 2x2 + 3 x – 8x – 12 = 0 x (2 x + 3) – 4 (2 x + 3) = 0 (x – 4) (2 x + 3) = 0 x = 4, – 3/2 II. 2y2 + 13y + 20 = 0 2y2 + 5y + 8 y + 20 = 0 y (2 y + 5) + 4(2 y + 5) = 0 (y + 4) (2 y + 5) = 0 y = – 4, -5/2 Hence, x>y
(2100.23 ÷ 34.98) + (864.32 ÷ 23.9) + 1854.11 =?
? = 54.89 × 270.08 ÷ 135.17 + 464.35 ÷ 29.03
(9116.89 – 8024.89 + 902.95) × 14 = 1800 × ?
?² x