EXERCISE 4.11. Check whether the following are quadratic equations)r3(2r+1)- x(r+ 5).mx2 + 3x +1=(x-2)2(viii) x3-4E-x + I-(x-2)3(iii)(x-2)(x + I )-(x-1 )(r + 3)2. Represent the following situations in the form of quadratic equations() The area of a rectangular plot is 528 m2. The length of the plot (in metres) is onemore than twice its breadth. We need to find the length and breadth of the plot.

EXERCISE 4.11. Check whether the following are quadratic equations)r3(

1.	EXERCISE 4.11. Check whether the following are quadratic equations)r3(2r+1)- x(r+ 5).mx2 + 3x +1=(x-2)2(viii) x3-4E-x + I-(x-2)3(iii)(x-2)(x + I )-(x-1 )(r + 3)2. Represent the following situations in the form of quadratic equations() The area of a rectangular plot is 528 m2. The length of the plot (in metres) is onemore than twice its breadth. We need to find the length and breadth of the plot.
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