Question

o
Option 4
1 point
If the first three terms of
an AP are x-1, x+1, 2x+3
then the value of x is *
O (a)​

Answer 1

Step-by-step explanation:

As we know that :

Sum of A.P. :

= > \frac{n}{2} (a + l)=>

2

n

(a+l)

According to the question :

$$\begin{lgathered}(x - 1) + (x + 1) + (2x + 3) = \frac{3}{2} ((x - 1) + (2x + 3)) \\ \\ = > 4x + 3 = \frac{3}{2} (3x + 2) \\ \\ = > 8x + 6 = 9x + 6 \\ \\ = > x = 0\end{lgathered}$$

x=0