Question
In each of these questions, two equations (I) and (II)
are given.You have to solve both the equations and give answer  I. 7x² - 19x + 10 = 0                                        II. 8y² + 2y – 3 = 0Solution
7x² - 19x + 10 = 0 7x² - 14x – 5x + 10 = 0 7x (x - 2) – 5 (x - 2) = 0 x = 2, 5/7 II. 8y² + 2y – 3 = 0 8y² + 6y – 4y – 3 = 0 2y(4y + 3) – 1 (4y + 3) = 0 y = −3/4, 1/2 Hence, x > y Alternate Method: if signs of quadratic equation is -ve and +ve respectively then the roots of equation will be +ve and +ve.  So, roots of first equation = x = 2, 5/7 if signs of quadratic equation is +ve and -ve respectively then the roots of equation will be -ve and +ve. (note: -ve sign will come in larger root) So, roots of second equation = y = -3/4, ½ After comparing roots of quadratic equation we can conclude that x> y.
If 36 persons can finish 50% of work in 12 days In how many days 72 person can finish the complete work?
How many pairs of squares in a chess board share exactly one corner?
Which one of the following statements for a tropographical map is not correct?
A certain logic has been followed in written the number below the line in each block. Follow the same logic to choose the correct number at the space be...
Find the odd one out:
Â
Which amongst the following was not correct about the ancient town of Mathura ?
The basic teachings of which amongst the following sects/religions are contained in the maxim "Good Thoughts, Good Words and Good Deeds."
A, B, C, D and E are standing in row. 'A' is between 'B' and 'D'. E is not at the starting of row. 'C' is just before D.Â
Study above statement ...
It is colder at the top of a mountain as compared to the base becauseÂ
Inland water transport does not take place in the rivers of