Question

Kiran bc
ag of
grapes and
8
that of
10. A water tank at a school has 24-litres of water. After the lunch times, it is obsc
carried? How much more grapes did she buy as compared
- litre. How much water did the students us Tina be
9. Ritika bought
3
the water level has come down to
2
.
When you anser

I will make him brain list​

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.