Question

find answers please​

Answer 1

Step-by-step explanation:

B

3+2√2-(3+√2)=√2

3+3√2-(3+2√2)=√2

Answer 2

Answer:

(C)

Step-by-step explanation:

For this we will use try and error method:

(A) AP -1.2,0.8,2.8.....

0.8 - (-1.2) = 2.8 - 0.8

0.8 + 1.2 = 2.0

2.0 = 2.0

L.H.S = R.H.S

so this is an AP as they have a common difference that is 2.0

(B) AP 3 + root 2,3 + 2root 2,3 +3 root 2.....

3+ 2 root 2 - (3 + root 2) = 3 + 3root 2 - (3 + 2 root 2)

3 + 2 root 2 - 3 - root 2 = 3 + 3 root 2 - 3 - 2 root 2

root 2 = root 2

L.H.S = R.H.S

so this is an AP as they have a common difference that is root 2

(C) AP 4/3 , 7/3 , 9/3 , 12/3.....

7/3 - 4/3 = 9/3 - 7/3

3/3 = 2/3

Here L.H.S is not equal to R.H.S .

So this is not an AP as it doesn't have a common difference.

(D) AP -1/5 , -2/5 , -3/5 , - 4/5.......

-2/5 - (-1/5) = -3/5 - (-2/5)

-2/5 + 1/5 = -3/5 + 2/5

-1/5 = -1/5

L.H.S = R.H.S

so this is an AP as they have a common difference that is -1/5.

So the answer must be option (C)

Hope this helps.