Question

find+four+numbers+in+AP+such+that+sum+of+2nd+and+3rd+term+is+22+and+the+product+of+first+and+fourth+term+is+85

Answer 1

Answer:

sn=n/2(a+(n-1)d)

Step-by-step explanation:

22=2/2(a+(2-1)d

22=a+d eq(1)

(a+3d)(a+d)=85 from( 1)

(a+ 3d)22=85

a+3d=