Math, asked by Tithi11, 1 year ago

find a if a2+2a+2, 3a2+6a+6, 4a2+5a+4 are in A.P.

dhathri123: is that square?

Tithi11: yes

Answers

Answered by dhathri123

hi friend,

we know that if p,q,r are in AP

then 2q=p+r

similarly,

2(3a²+6a+6)=a²+2a+2+4a²+5a+4

6a²+12a+12=5a²+7a+6

a²+5a+6=0

a²+2a+3a+6=0

a(a+2)+3(a+2)=0

(a+3)(a+2)=0

a=-3,-2

I hope this will help u:)

Tithi11: oh

Tithi11: so can i connect u here?

dhathri123: yes ofcourse

Tithi11: thank u so much..(≧▽≦)

dhathri123: :)

Tithi11: by the way how do i know tht 3 variables are in A.P? i mean what shoul be the answer if tgey are ib A.P

dhathri123: if the common difference is same then the numbers are said to be in ap

Tithi11: ohh....ok

Tithi11: thanks

dhathri123: :)

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