Question

(1) X-1 - (x - 1)² + ax - a​

Answer 1

-x²+ 3x+ax=0

Explanation:

x-1-(x)²+(1)²-2*x*(-1)

x-1-x²+1+2x+ax-1

reorder the values

-x²+2x+x+ax-1+1-1=0

then solve

-x²+3x+ax=0