Question
I. 2y2 + 13y + 15 = 0 II.
2x2 + 11 x + 12 = 0 In the following questions, two equations numbered I and II are given. You have to solve both the equations and give answer.Solution
I. 2y2 + 13y + 15 = 0 2y2 + 3y + 10 y + 15 = 0 y (2 y + 3) + 5 (2 y + 3) = 0 (y + 5) (2 y + 3) = 0 y = – 5, – 3/2 II. 2x2 + 11 x + 12 = 0 2x2 + 3x + 8 x + 12 = 0 x (2 x + 3) + 4 (2 x + 3) = 0 (x + 4) (2 x + 3) = 0 x = – 4, – 3/2 Hence, no relationship can be established between x and y
15848 ÷ 4 – 793 × 6 + 3628 = 3 × ?
Find the simplified value of the given expression.
18 ÷ 3 + {(48 ÷ 6) of 12} + 10 - 8 of 9
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
1428 ÷ 17 = ? % of 120
- What will come in place of the question mark (?) in the following questions?
25% of 360+40=? - What will come in place of (?) in the given expression.
(14)² – (12)² = ? [1.45 X 1.45 X 1.45 + 0.55 X 0.55 X 0.55 + 4.785] = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
(√ 121 x 41) + (3√343 x √289 ) = ? x 19  Â
- Simplify the following expression:
16 + [17 - (8 + 11) + 6 - 3] ÷ 0.2
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