(a+1)^2+2(a+1)-3(a-1)(a+1)

Question

(a+1)^2+2(a+1)-3(a-1)(a+1)

Answer 1

(a+1)²+2(a+1)-3(a-1)(a+1)=a²+2a+1+2a+2-3a²+3=a²-3a²+2a+2a+1+2+3= -2a²+4a+6= -2(a²-2a-3)