Question

The factor of a² - 1 -2x -x²

Answer 1

Step-by-step explanation:

let,

p=(a²-1)-2x-x²

p= –{x²+2x-(a²-1)}

p= –{x²+2x-(a+1)(a-1)}

p= –[x²+{(a+1)-(a-1)}x-(a+1)(a-1)]

p= –[x²+(a+1)x-(a-1)x-(a+1)(a-1)]

p= –[x(x+a+1)-(a-1)(x+a+1)]

p= –(x+a+1)(x-a+1)

p= (x+a+1)(a-x-1)