Math, asked by cutieangel90, 5 months ago

21st term of the AP, whose first two terms are -2 and 2​

Answers

Answered by laxmidevasani983
2

a1 = -2 ; a2 = 2

d = 4

a21 = a + 20 d

= -2 + 20 ( 4 )

= 80 - 2

= 78

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Answered by aashanapardeshi2005
0

Answer : 78

Step-by-step explanation:

a= -2; d= a2-a = 2-(2) = 4

a21 = a + (21 - 1)d

= -2 + 20×4

= -2 +80

= 78

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