Question

find the two consecutive terms in the expansion ​

Answer 1

Answer:

ANSWER

T

r+1

=

74

C

r

3

74−r

(2x)

r

andthenT

r+2

=

74

C

r+1

3

73−r

(2x)

r+1

asco−efficientsareequal

74

C

r

3

73−r

2

r

=

74

C

r+1

3

73−r

2

r+1

(

74−r

74!

!r!)×=(

(73−r)!(r+1)!

74!

)×2

3(73−r)!(r+1)!=2(74−r)!r!

=3(73−r)!(r+1)!=2(74−r)!(73−r)!r!

=3(r+1)=2(74−r)

=3r+3=148−2r

∴5r=148−3

r=(

5

145

)=29

Hencetermsare(29+1)

th

and(29+2)

nd

or30

th

and31

th

term

Step-by-step explanation:

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Answer 2

Answer:

sorry I don't know the answer soooooooooooooooooooory

Step-by-step explanation:

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