Question

62 एसिड और पानी के मिश्रण की मात्रा
= 40 लीटर
मिश्रण में एसिड की प्रतिशत मात्रा = 10%
:.मिश्रण में एसिड की मात्रा
एसिड की प्रतिशतता
कुल मिश्रणx
100
10
= 40x
100​

Answer 1

Answer:

This implies that

x2+2ax=4x−4a−13

or

x2+2ax−4x+4a+13=0

or

x2+(2a−4)x+(4a+13)=0

Since the equation has just one solution instead of the usual two distinct solutions, then the two solutions must be same i.e. discriminant = 0.

Hence we get that

(2a−4)2=4⋅1⋅(4a+13)

or

4a2−16a+16=16a+52

or

4a2−32a−36=0

or

a2−8a−9=0

or

(a−9)(a+1)=0

So the values of a are −1 and 9.

Answer 2

Answer:

Right from childhood, Santosh was not content with a traditional way of life and felt that if she chose a correct and a rational path, the others around her had to change, not she. She wanted to chart her own course in life, rather than following the age-old customs and traditions.