Question

 (3*x+1)^2-2*(3*x+5)*(3*x+1)+(3*x+5)^2

Answer 1

Cai gj ma tum lum the

Answer 2

(3x+1)²-2(3x+5)(3x+1)+(3x+5)²

=[(3x+1)-(3x+5)]

=3x+1-3x-5

=-4