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(vii), , , , I) 0 +846x +12 =2y' -2x > x -14x-6x° -8=0, , It is not of the form ar’ +hr-+e=0 +, Hence, the given equation is not a quadratic equation., , (viii) x =4x° <x 41 = (x=2)' 9 x! <4? <4 1! 8-68 +120 = 2? 13+ 980, , , , , , It is of the form ar’ +br+e=, , Hence, the given equation is a quadratic equation., , Question 2:, , Represent the following situations in the form of quadratic equations., (i) The area of a rectangular plot is 528 m?. The length of the plot (in, metres) is one more than twice its breadth. We need to find the length, and breadth of the plot., , (ii) The product of two consecutive positive integers is 306. We need, to find the integers., , ¢, , ages (in years) 3 years from now will be 360. We would like to find, , , , Rohan‘s mother is 26 years older than him. The product of their, , Rohan’s present age, , (iv) A train travels a distance of 480 km at a uniform speed. If the, speed had been 8 km/h less, then it would have taken 3 hours more to, cover the same distance. We need to find the speed of the train., Answer 2:, , (i) Let the breadth of the plot be x m., , Hence, the length of the plot is (2x + 1) m., , Area of a rectangle = Length x Breadth, , +528 = x (2x +1), , => 2x +x-528=0, , (ii) Let the consecutive integers be x and x + 1., , , , 2| Page