Question
I. 15y2 + 26y + 8 = 0 II.
20x2 + 7x – 6 = 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. 15y2 + 26y + 8 = 0 15y2 + 6y + 20 y + 8 = 0 3 y (5 y + 2) + 4 (5 y + 2) = 0 (3 y + 4) (5 y + 2) = 0 y = -4/3,-2/5 II. 20x2 + 7x – 6 = 0 20x2 + 15x - 8 x – 6 = 0 5 x(4 x + 3) – 2(4 x + 3) = 0 x = 2/5,-3/4 Hence, no relationship cannot be established between x and y
9/5 × 18/25 ÷ 42/21 = ? - 82/75
15 × 18 + 25 × 12 + 30 × 24 = ?% of 1720
√324 * 6 – 20% of 180 + ? = 130% of 150
400 % of 20 + 65 % of 620 - 92 × 5 = ?
- Find the value of the expression:
15 + 10 – 6 × [20 + 8 – 2 × (50 – 35)] What will come in place of (?) in the given expression.
(3/4 of 64) + (1/2 of 48) = ?If 1210 ÷ 22 + 1332 ÷ 37 - y + 54 × 3 = 980 ÷ 20 × 144 ÷ 48, then the value of y is:
600 ÷ 8 + 12 % of 250 + ? * 14 = 50 * √49
What will come in the place of question mark (?) in the given expression?
23 X 35 - ? = (132 + 16) X 3 + 25
- What will come in the place of question mark (?) in the given expression?
435 + 729 - 282 x 2 = ? + 225 + 125
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