I. x2 – 18x + 81 = 0 => x2 – 9x – 9x + 81 = 0 => x (x – 9) – 9(x – 9) = 0 => x = 9, 9 II. y2 – 3y - 28 = 0 => y2 – 7y + 4y - 28 = 0 => y (y – 7) + 4 (y – 7) = 0 => y = 7, -4 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 = 9, 9 if signs of quadratic equation is - ve and -ve then the roots of equation will be +ve and -ve respectively. (note: +ve sign will come in larger value) So, roots of second equation = x = 7, -4 After comparing we can conclude that x > y.
I was surprised (A) / when the hostess smiled (B) / as if she saw me before (C) / No Error (D)
Sheela, who is (A)/one of the successful entrepreneurs, (B)/are giving (C)/tips for startups (D).
The army men or the commander-in-chief (A)/were not ready (B)/to accept defeat so easily, (C)/so they fought fiercely (D).
Given below are sentences with an error in each. The error is in one part of the sentence. Below each sentence are given the options containing the par...
They had been dancing / for an hour / when our dance teacher / had arrived.
I was offered a good position outside my hometown but I turned down the offer.
Doubt pour over (A)/ me like hot fudge on (B)/ salted caramel ice cream. (C) / No error (D)
She recorded the voices of men and women rarely given an opportunity to speak.
The evolution of homo sapiens are popularly illustrated (1)/at a series of sketches, one progressing from (2)/a hunched and initially almost-crawling p...
Given below are sentences with an error in each. The error is in one part of the sentence. Below each sentence are given the options containing the par...