Start learning 50% faster. Sign in now
I. 2y² - 3y – 14 = 0 2y² - 7y + 4 y – 14 = 0 y (2 y – 7) + 2( 2 y – 7) = 0 (y + 2) (2 y – 7) = 0 ∴ y = -2, 7/2 II. 3x² - 7x + 4 = 0 3x² - 4x - 3 x + 4 = 0 x (3 x – 4) – 1 (3 x – 4) = 0 ∴ x = 1, 4/3 Hence, relationship cannot be established between x and y Alternate Method: 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 smaller root) So, roots of first equation = y = -2, 7/2 if signs of quadratic equation is - ve and +ve respectively then the roots of equation will be +ve and +ve. So, roots of second equation = x = 1, 4/3 After comparing we can conclude that relationship cannot be established.
If T and the shopkeeper who have Honda interchange their auction days then how many shopkeeper auctioned after the one who have BMW cars?
Which of the following combinations is definitely correct?
How many persons are going to office between M and P?
Who among the following sits exactly between the one who likes Pug and W?
Which of the following box is at the top?
Which among the following groups is working in Reliance?
Who among the following lives on the fifth floor?
If J is related to O, K is related to R, likewise L is related to which of the following?
Which of the following statements is true?
Which one of the following boxes contains grapes?