Question

The value of la-1)+q? --- 2 4210 )
when a = 2 and b= -1 is

Answer 1

-1

Explanation:

2−1+ (22−(−1)²) / (1−(2)(−1))

+2(2−(−1)) / (2)(−1)

22−(−1)2 / 1−(2)(−1)

+2(2−(−1)) / (2)(−1)

= -1