Question

find the first four terms of an AP whose 1st term is -2 and common difference -2?

Answer 1

Hi friend,

Here is your answer,
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First term (a) = -2
Common difference (d) = -2

Second term = a + d
                     = -2 - 2
                     = -4

Third term = a + 2d
                 = -2 + 2*(-2)
                 = -6

Fourth term = a + 3d
                   = -2 + 3*(-2)
                   = -8

AP is   -2 , -4 , -6 , -8........
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Answer 2

Given :

• First term (a) = -2

• Common Difference (d) = -2

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To Find :

• Four terms of AP

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Solution :

⇒a = -2

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⇒a2 = a + d

⇒a2 = -2 - 2

⇒a2 = -4

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⇒a3 = a + 2d

⇒a3 = -2 + 2(-2)

⇒a3 = -2 - 4

⇒a3 = -6

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⇒a4 = a + 3d

⇒a4 = -2 + 3(-2)

⇒a4 = -2 -6

⇒a4 = -8

So, AP is -2,-4,-6,-8,..........