Question
I. 144x² - 163x - 65 = 0 II. 91y² - 128y -48 =
0Solution
I. 144x² - 163x - 65 = 0 144x² - 208x + 45x - 65 = 0 16x (9x – 13) + 5(9x – 13) = 0 (16x + 5) (9 x – 13) = 0 ∴ x = -5/16, 13/9 II. 91y² - 128y -48 = 0 91y² + 28y - 156y - 48 = 0 7y (13y + 4) – 12 (13 y + 4) = 0 (13 y + 4) (7y – 12) = 0 ∴ y = 12/7, -4/13 Hence, relationship cannot be established between x and y
What will come in place of the question mark (?) in the following expression?
25% of 2000 – 50% of 500 = 100% of ?
What value should come in the place of (?) in the following questions?
200 % of (6 1  × 5 + ?) = 3% of 1 800 – 12 % of 75 0
...36895 - 4256 - 2233 = ?Â
60% of 250 + 14 × 10 - 210 = ?
654.056 + 28.9015 × 44.851 – 43.129 = ?
25% of 440 + 88 X (1/2)2 Â - 28 = 8 X ?
What value should come in the place of (?) in the following questions?
(1728)(1/3) + √441 + √1089 = ? × 5 + 11
5.5 × 3.2 × 2.3 = ?
1.55 + 2.05 + 1.5 × 11 – 20% of 10.5 = ?
- Simplify the following expression:
16 + [17 - (8 + 11) + 6 - 3] ÷ 0.2
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