Question

C. 42-44
U.
Oo - 44
a. 95 - 32
b. 41-13
4. Estimate the following differences by rounding to the nearest 10 and 100 and then
find out which estimate is closer to the actual answer.
b. 834 - 343 C. 596-213 d. 651 - 345
755​

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

it is available in google

Step-by-step explanation:

please like and rate and follow and mark on brainliest answer at that time only I will tell you this correct answer I know it very because I am studing inter 1st year