Question
I. 2p2 + 5p + 2 = 0Â Â Â Â Â Â Â Â II.
2q2 + 11 q + 14 = 0 In each question two equations are provided. On the basis of these you have to find out the relation between p and q. Give answer.Solution
I. 2p2 + 5p + 2 = 0  (2p + 1) (p + 2) = 0  p = - (1/2) or -2  II. 2q2 + 11 q + 14 = 0  (q + 2) (2q + 7) = 0  q = -2 or - (7 /2)  Hence, p ≥ q  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 = p = -1/2, -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 = q = -2, -7/2 After comparing roots of quadratic eqution we can conclude that p ≥ q.
How much percent more does a type III watch cost compared to a type II watch?
Arjun works for ‘x’ days and he complete 20% of work. while remaining work is completed by Bheem & Chinky together in (x + 190/13) days, then What w...
Arjun & Chinky together start work and do it for 10 days and rest work is completed by Danny & ‘X’ together in 4 days. Then, in how many days ‘X�...
Danny & Elli together complete work ‘p’ in (z – (67/52)) days, while Danny & Finn together can complete the work ‘q’ in ‘z’ days. If work ...
Company Y placed an order considering the rate of type III watch as Rs. 1.5 Lakhs. What amount would the company have to pay for 3 watches of type IV an...
If Chinky worked for whole time and Arjun & Bheem work alternatively with Chinky, then what will be the minimum number of required days to complete the ...
Company X considered the price of watch of type II as Rs. 1 lac and placed an order for 4 watches of type III, 2 watches of type II and 1 watch of type ...
If both the companies X and Y placed an order for 3 watches of type I, 4 watches of type III and 2 watches of type II, what is the difference between th...