The sum of n terms of AP is 3n²+5n,then which term of the AP is 152.�

1.	The sum of n terms of AP is 3n²+5n,then which term of the AP is 152.
Answer» Step-by-step EXPLANATION: Tn = 3n²+5n a = T1 = 3(1)²+5(1) = 8 d = T2 - T1 = 3(2)²+5(2) -8 d = 32 - 8 = 24 tn = a + (n-1)d 152 = 8 + (n-1)24 144 = (n-1)24 6 = n-1 n = 6+1 = 7 ...;):);)

The sum of n terms of AP is 3n²+5n,then which term of the AP is 152.

Answer»

Step-by-step EXPLANATION:

Tn = 3n²+5n

a = T1 = 3(1)²+5(1) = 8

d = T2 - T1 = 3(2)²+5(2) -8

d = 32 - 8 = 24

tn = a + (n-1)d

152 = 8 + (n-1)24

144 = (n-1)24

6 = n-1

n = 6+1 = 7 ...;):);)

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The sum of n terms of AP is 3n²+5n,then which term of the AP is 152.​

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The sum of n terms of AP is 3n²+5n,then which term of the AP is 152.