Question

the sum of first p terms of an AP is (ap²+bp²). What is the common difference of the AP?​

Answer 1

Answe

sumofptemsinap=sp

sp=ap

2

+bp

s1=a1

2

+b1=a+b

s2=a2

2

+b2=4a+2b

a1=s1=a+b

a2=s2−s1=4a+2b−(a+b)

=4a+2b−a−b

=3a+b

commondifference=d

d=a2−a1

=3a+b−(a+b)

=3a+b−a−b

=2a

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