Question

quadratic equation (x+1)(x-1)=13​

Answer 1

Step-by-step explanation:

(x + 1)( x - 1) = 13

x² - 1 = 13

x² = 14

x = √14

Answer 2

Step-by-step explanation:

x^2-x+x-1=13

x^2-1=13

x^2=13+1

x^2=14

x= + or - √14