Question

${a}^{2} = a_{8} \\ then \: a_{8} =a_{4} + 24$
find the a.p ​

Answer 1

Answer:

a+7d=a+3d+24

4d=24

d=6.

As a+7d=a^2

Step-by-step explanation:

a^2-a-42=0

a^2-7a+6a-42=0

a(a-7)+6(a-7)=0

a=-6 or a=7

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Answer 2

Step-by-step explanation:

See answer in above picture