Question

Solve the following equation by factorisation ?

x+1 + x-1 = 13
x-1 x+1 6
​

Answer 1

Step-by-step explanation:

x+1+x-1 =13

2x =13

x=6.5

• (x-1)(x+1) =6
• x^2 -1 =6
• x^2 =7
• x = sq root 7